when a phillips is not a phillips plus so much more! - eiki projector

So why all the confusion?
Why are all the broken screws and drives?
Why is this screw so awkward with the driver?
Keep reading, be surprised when unplugging the mystery of the spiral drive, and show some that you may have never seen before.
It seems like everyone with ideas is trying to patent for getting rich, and many are just not successful.
Screws are everywhere today and many people are more confusing than ever before.
This guide should help you with many kinds.
Let's introduce some basic knowledge and history first.
Tools in screw shape became common around the first century, however, historians did not know who invented the first tool.
The early screws were made of wood and used for wine pressing, olive oil pressing and pressing clothes.
The turning screw is done by the drive rod handle located in the vertical hole.
Metal screws and nuts used to hold two objects together first appeared in the 15 th century.
Jesse Ramsden UK instrument manufacturer 17701735-1800)
Invented the first satisfactory screw. cutting lathe.
Ramsden inspired other inventors.
Henry, British, 1797. 1771-1831)
Invented a big screw.
Making the quality possible cutting lathe
Production of screws with precise dimensions.
In 1798, David Wilkinson of the United States also invented a large number of machines for the production of threaded metal screws.
There are 3 old screws in the picture, the screws on the left (A)
It was handmade at the end of the 18 th century.
Please pay attention to flat points on the shaft, irregular threads, blunt tips and slots that deviate from the center.
Screws in the center (B)
It's about 1830 machines.
It has sharp, uniform threads, cylindrical, blunt ends, and the slot still deviates from the center.
Screws on the right (C)
It is a modern gimlet screw, post 1848, with a tapered shaft and even thread, tip and center slot.
There are basically two types of safety fastenerstamper-
Anti-Tamperingresistant. Several tamper-
Anti-drive type created, originally designed to tamper-proof.
See "tampering-
Here is the proof of screw myth. Tamper-
Scream-resistant safety fasteners including Phillips, TORX®, And hexagon, also tampering with manufacturingresistant form.
These are screws, bolts, nuts and fasteners that are difficult to disassemble, but are not as good as tampering in design and application-Anti-fastener.
They provide good security as there is a special tool besides your standard Phillips or slot --
A screwdriver is required to remove them.
They are also very popular as they can be purchased in small quantities from most safety parts dealers and are much cheaper than tamperingAnti-fastener.
However, many tampered bits
Now, screw-resistant heads are available at hardware stores, tool suppliers and the internet at any time.
In the absence of the correct drive, there are many commonly used techniques to extract tamper-proof screws, such as turning the screws using an alternative drive that can achieve sufficient grip;
Modify the head of a drive to handle tampering-
Anti-drive and other.
These special screws provide only moderate safety. Tamper-
There are specialized fastener companies that produce unusual proprietary head designs that only provide matching drivers and are only available to registered owners.
An example of this is the wheel and/or attachment of spare tires for certain types of cars;
A special socket may be required for one of the nuts (
Available on board)
Prevent theft.
Some examples of these fasteners are Uniqz®Key-Lok® and Penta-Plus & reg tamper-
Explosion Proof fasteners for Bryce fasteners.
Tamper-proof screws myth tamper-proof screws are not as tamper-proof as people think.
In addition to the marketing statement, most of the drive styles are no longer true tampering --proof.
The reason is that most of the safety screw drill bits are easy to get and there are dozensof-
Thousands of circulation.
Almost everyone seems to have some.
The safety screws have been in existence for 50 years and most have no patent protection.
"Tamperproof" drill bits are manufactured, imported and widely distributed without restriction.
There are thousands of outlets and catalogues in the circulation marketing security department through this convenient access, Torx-pin®, Hex-pin®, Phillips-
Pin®Three-wing wrench®Three.
Slot®Player screw and one
Wang Dalen's screwproof" only.
"Tamper-proof screws" is mostly a myth.
Pin type screws can usually be removed by using hammer and awl/nail/knife etc, and hit the pin in one way, then the pin in another way until the pin breaks, so I left you to Africa.
Secure version.
You should know before visiting the screwsSlip Fluids.
You may not know that these products are available (like me).
''Nd industrial drive anti-Cam-
Liquid Discharge®'Nd driverip®Remove or tighten screws and other fasteners easily.
Drop a drop®Create a positive grip between the fastener head and the metal surface of the tool.
Very effective in applications where the fastener head or drive is worn or damaged.
ND Delhi viglipp®Increase the grip between the fastener head and the tool by up to 700%, virtually eliminating tool wear, rounded corners and deformed fasteners.
ND Delhi viglipp®Help you remove rust or "freeze"in-
Place screws and bolts that do not move.
Using ND driverip®Connected with all types of screwdrivers, hex keys, pliers, channel locks, vise clips, and openingsend box-end wrenches. '''Align-
Shoe Industry Limited is ScrewGrab®ScrewGrab. ®Is a friction gel that helps remove or tighten all types of fasteners-
Damaged or rusted
Single screen grab®Generate positive grip between metal surfaces (
New test shows up to 800%)
, Which actually eliminates tool wear and stripping, rounding, or deformation of fasteners.
Screwdriver®Not Glue, can work in an instant, wipe clean after use, no
Corrosive, unlimited shelf life.
Head for stripping, rounded or deformed, seizure, rust or hard headto-reach spots.
Work on a sloppy or mismatched socket and block the drill bits from entering the chuck.
Ez grip friction drop™Ez grip friction drop™There are three different levels: Business, aircraft and Navy.
In the decline of commercial and aircraft grades, alumina cubes are suspended in non-toxic, food-
Grade antifreeze.
The aircraft rating meets 5 different ATSM and Miltary standard tests.
In the marine grade, hardened aluminum cubes are suspended in non-
Replace antifreeze with toxic oil
The next time you try to remove a screw with a damaged head, you may want to drop the friction of the EZ grip™Give it a try.
The manufacturer claims that a drop on the head of the damaged screw will add enough clamping force to remove the problem screw. Their secret?
Tens of thousands of hardened aluminum cubes suspended in the carrier, every 4 microns in size, give EZ grip friction drops™Grip power.
The aluminum cube provides a temporary bridge between the tool and the stressed fastener head.
These pliers may also be worth considering when removing stubborn screws.
Is there a stuck screw or a screw with an odd safety head?
"Do not touch the extractor kit;
Wrap these $25 screws around the head and screw them out.
"The claim made by Japan's leading manufacturer of hand tools is --Engineer Inc.
Used to be the Mfg of the Futaba tool.
These pliers removed the tampering.
Resistant, rust, Peel
Head or other damaged screws. -
Tool dealer review by Gaven Johnson [j][br]]
When I was working on the initial Phillips project, I stumbled upon this unique driver head system and lost specific information and links because it didn't work there.
The message to remember is that this is a Japanese news article (
Google Translate Web pages from Japanese)
Discuss a recent invention
The screw head is round and blank without marking.
To prevent spoilers, the screw head imitates the rivets.
The drive uses a heated ceramic head, and when heated and the screw head expands, the handle will be tight enough to drive the screw.
Once cooled, the screws become almost lukewarm unless heated by the same drive head unit. `br``br`
Oval Disc head safety screws are unique in the sense that the head does not have a traditional drive slot.
Therefore, special recessed drives that accurately hold the oval head must be used to install or remove the screws.
This unique feature makes the oval disc head safe screw vandal-
Resist, reduce the risk of vandals or intruders tampering with or removing screws.
The head looks like a rivet or rivet and looks very deceptive.
Thanks to the design of the oval disc head safety screw, it is suitable for applications with low to medium torque and is "two-way.
There are two sizes for special manual drives-
M4 screws for M5 and M6 screws and OP4 for OP56 `br``br`
A safety fastener is Avsafe without slot, tamper proof™FP/FR/FG series screws sold by Avdel Corporation Systems, Parsippany, N. J.
Safety fasteners such as Avsafe™Screws generally include a threaded handle attached to a slot-free long round head, designed for installation and removal with special drive tools and cannot be used with ordinary sleeves, hex wrenches or other conventional tools
One arrangement to prevent this tampering is to position the safety fastener in the groove of the panel.
The sides of the groove must be spaced far enough to allow the special drive tool to be installed, but the interval is too close to allow other tools such as pliers to catch the head of the fastener.
These grooves increase the manufacturing cost and are not desirable for some installations. `br``br`
This fastener includes a round, blind hole or pocket in its head.
The installation and disassembly of fasteners is done by means of a tool containing an eccentric segment at the end of the shaft.
When rotating inside the pocket, the eccentric segment is horizontally misaligned relative to the shaft, providing a friction grip for the side wall of the pocket.
The strength of the grip is proportional to the torque applied.
Eccentric displacement allows rotation, but prevents the tool from rotating from the fastener, thus eliminating the Cam-
External and surface damage caused by contact with the tip of the rotating tool.
The eccentric head of the tool can be used at one time, and can be cut off when the predetermined torque is reached. The smooth-
For commonly used tools, round holes on the side are not available for purchase;
Tamper with fastenersresistance.
In another embodiment, the fastener includes the raised part in the pocket.
A tool with complementary openings cut off from the raised part at predetermined torque.
US patent 7066062 [:[br]]`br`The Keyed-
Music®The safety screw of the Bryce fastener has a pin inside the socket of the unique shape of the head and requires a special insert position to insert and remove, as it requires a perfect cutting tool or key to operate it, so make it more like a lock.
To ensure that each key code is exclusive to the owner, there are millions of key-way variants.
These drives are not thousands of massively produced bits sold without distinction, but rather a highly secure locking system.
Only the owner owns their private or exclusive key code.
Unlike Hex or Torx screws, it does not have a symmetrical shape that is easy to distinguish and compromise. Keyed-
Music®Not an easy target or false security.
They're not just a tampering, Wang Dalen-proof, tamper-
Resistant to screws, it actually repels hex, Torx, slotted bit and even sub-fixture.
It is suitable for medium torque applications due to design reasons and is "two-way"
Security fixes available.
Cheapest high security tampering
Proof of how many specifications from 3/56 (M2)to 5/8-11(M12)`br``br`Spin-
The "Lok" of Bryce fasteners is a tampering
Proof screws for applications that require permanent installation. Spin-
The Lok "configuration is intended to allow the drill bit to deliberately rotate the socket out at a precise torque.
The result is a perfect round hole with a center pin.
The torque is calibrated within 1 inch/lb and set to the customer and aposs specifications.
Benefits include lower prices; rustproof (
Made of solid stainless steel);
Easy to install with the right bit (
Can be inserted with electric tools
Products of size 6/32 [M3]to 1/2-13 [M12]
Screw diameter. `br``br`
Cutting a slot in the screw head to turn it is an old idea: the 16th-century drawings show the screws with the slotted head.
The advantage of the slotted head is that most people have a screwdriver that fits them (sort of);
The worn driver is easy to re-grind;
New screw head slots can be easily cut using a hacksaw.
Otherwise, the slotted head is the worst screw drive system and, while common, is generally out of date.
Some of its flaws include: the driver does not automatically center or align with the slot (
There is a picture of the driver's prompt that helps the driver stay on the slot);
It's easy to get off from the center;
The user must keep the axis of the screwdriver aligned with the axis of the screw;
The driver can only engage the head in two possible positions of 180 degrees.
The sides of most slotted screwdriver bits are tapered.
When the driver turns, it tends to be pushed up and pushed out of the screw head.
This is called "camout", see the glossary.
In order to increase the disadvantage of the slotted head, the screwdriver of the slotted screw is usually described with the length of the shaft and the width of the tip;
The critical measurements are rarely given, the thickness of the tip.
Sell any given tip width within a certain thickness range;
The longer shaft usually has a thicker blade. `br``br`
This is basically a slot drive, but ACR®(
Anti-exposed ribs)
The technology reduces the damage to the screw head, while providing a better driving force that improves the user's hand comfort.
The less Camout, the less damage to the component.
This drive improvement is available for all standard slotting and crossoverSlot Screws.
More information about ACR®View ACR®Phillips®`br``br`
This screw and drive is designed to be centered on the head of the screw rather than slide out.
Some of the advantages of the system are that it works fine, though rarely encountered, because it is not popular with the development of other more popular driver systems.
This drive does address some of the defects of the slot screws, including: the drive is automatically centered or aligned with the slot;
The screw keeps the axis of the screwdriver aligned with the axis of the screw;
The side of the drive is parallel, thus reducing "camout ".
The second feature is Wang Dalin.
Resistance, because the wrong drive will not go deep enough or there may not be enough torque to remove the screws without damaging the head. `br`
When using coins as a tool, it is very easy to tighten and unscrew the coin screws because the size of the screen and slot is very large.
It is very similar in appearance to the slot head, but there is a circular concave surface at the bottom to accommodate a drive in the shape of a deeper round coin.
Coin screws are popular in items that require screws or lids, and when tools are not available, such as camping gear, these items may need to be removed.
Here is a good example of a Promopeddler coin screwdriver, as well as the coins shown in Ralph Ditton's comments on SteriPen Adventurer water sterilizer from Backpackgeartest`br`
See also G type clutch head.
Initiated by joint screws and bolts.
There are two types of clutch head screws, the old G-
Style and newer-style.
The clutch head is a screw head and screwdriver.
Unlike the standard slot screw tip, the clutch head tip has four main contact points.
When turning counter-clockwise, these locks enter the screw head and unlock when turning clockwise.
This tip does not damage the screw head due to a lot of contact points. `br``br`
See also type A clutch head.
Sometimes called the shape of a butterfly, it is older than Type.
Found in some trailers and mobile houses.
G-bit is recommended: maintenance work or application that needs to be removed frequently.
Applications that do not require friction retention.
Clutch head screws are popular in mobile home buildings and electric Madas.
These are available in Chevrolet and GMC trucks manufactured at 1940 & aposs, 50 & aposs and 60 & aposs, as well as some Corvette.
The beds of these trucks often use larger 5/16 "clutch head screws, and 5/32" to 5/16 "for cab, dash, door and forward boards ".
By grinding the end, it is easy to restore the worn tip on the drive.
The size is the diameter of the drill point (in inches ).
The clutch heads of 1/8, 5/32, 3/16, 1/4, 5/16, are also used on the old tractor, fixing the grille and sheet metal parts on the tractor, the early car has a round head, except for the special driver, there is no way to remove them.
The use of a common standard screwdriver on these screws usually results in the removal of the screw head.
They are used in mass production drivers because it is easier and faster to install them with power drivers than to use conventional bolts. `br`
The clutch head safety screw, also known as the "one-way screw", is used for permanent installation.
They can be installed with a normal screwdriver.
The head of the screw has a normal drive face and a back surface of the chamfer, which prevents the screwdriver from applying torque when trying to release the screw.
Once installed, it is usually necessary to drill out these screws to remove them, but as shown in the figure, these screws have a special dismount drill.
This unique feature enables clutch head screws to be tamper-proof, reducing the risk of tampering or removal of screws by vandals or intruders.
Thanks to the design of the clutch head safety screw, it is suitable for higher torque applications.
Lordzion: These screws are also known as the head of the prison.
The use is falling, but in the application of home window locks, cell hinges, and exposed door lock screws, they are usually self-tapping screws, wood screws, or machine screws. `br`
Also known as Snake Eyes, pig nose screws or double holes.
They drilled two small holes in their heads.
A special dual pin drive bit is required to tighten and loosen the screws.
The wrench drill bit has four, six, eight, and ten sizes.
Please note that there are also rice snake eyes where the hole spacing does not match the wrench, and the hole size is different. `br`
This drive is similar to 4-
Gaps described later.
The spacing of the pins is not important.
Sizes include 4, 6, 8, 10, 12, 14 `br`The T-screw has a T-
Head shape, flat side.
Use a dedicated wrench to turn it.
App T-often
Screws are used for blind fastening where the head is inserted and then crossed in the Channel or slot and fastened with a nut.
In a common application
Screws are the safest way to hang pictures.
The bracket is screwed on the back of the frame and the screw is inserted into the wall in a precisely measured position.
The frame is then mounted on it and the head turns to the channel that engages the frame using the safety wrench key. `br``br`
Aluminum Corporation of America
Torque®The grooves are milled to the fastener head and have a good performance record where the maximum efficiency of the structural fastening system is required.
The system is best suited for the maintenance efficiency of repeated installation and removal of high strength fasteners.
This Cup slot helps drivers drive automatically
The center saves time and extra convenience.
During installation or disassembly, the inverted focus part of the groove provides important locking-in condition.
The rotation of the solid drive tip provides full bearing loads, and the interlocking position eliminates the operator's need for end loads.
The driver has a higher reusable cycle compared to other fastening systems.
Even after a few years, the system has sufficient torque reserves for active and determined disassembly. `br``br`
Taper (Alcoa) fastening system
Connie®Torque®Proprietary grooves with innovative design provide more ready-made assistance during installation to ensure positive alignment of toolsto-recess.
Progress beyond speed Drive, Highperformance Hi-
Torque®There is a tapered groove centered around the familiar bow tie weakening shape.
All the requirements of the final groove are met, and all functions are installed at high torque value, even after years of service life, the system has sufficient torque reserves to ensure and actively disassemble.
Connie's family®Torque®With its simple drive tool points and matching groove cones, it ensures relatively fast and active engagement as well as rotation alignment.
In addition, the seat where the blade tip enters the groove keeps the blade in place without the need for end load.
Better alignment ensures reduced assembly and maintenance costs: faster work and less damage to adjacent structures. `br``br`Tri-
Wing®It is a registered trademark of Phillips Screw Company.
The Tamper Tri-
Wing®The safety screw has a unique triangular slotted groove, highly tampered
Proof that a special insertion position or key wrench is required to be inserted and disassembled.
This unique feature enables tampering with three
Wing®The screw is tamper-proof and reduces the risk of vandals or intruders tampering with or removing screws.
The design of the drive system is suitable for medium and high torque applications and is "two-way. Tri-
Wing®Sizes include: 1, 2, 3, 4 Nintendo uses these screws on several consoles and accessories, including Game Boys, Wii and Wii Remote, to prevent home repairs.
View player Drive. `br``br`
Opsit®Is a registered trademark of Tamperproof Screw Company, Inc.
An interesting concept of tamper-proof screws is to install reverse threaded sheet metal screws with tamper-proof screws
So if you try to remove it, it will tighten clockwise. Off-
Tilting blades allow more insertion torque than removing torque.
Because this is not easy to do, so it is very suitable to do. `br``br`
Tampering with CELOK®The screw has a constant triangular geometry that allows the groove to be highly tampered
Proof that a special insert bit or key wrench needs to be inserted and removed.
Anti-damage tampering CELOK design®Safety screws for medium size-
High torque applications are "two-way. `br``br`
The slot on the outer edge of the head provides a more aggressive drive, and the risk of deformation and fracture of fasteners is less. Power-
The drive device can be used with a matching drive socket, which makes this model suitable for large-scale use
Production applications that require high safety and fast assembly time-eg.
Electronic products or office equipment. `br`
Uniqz is designed to prevent theft and vandalism®It is said to be the ultimate safety fastener to become the key
Music®And Bryce fasteners.
A cost-effective and practical loss solution
In the prevention application of electronic industry, this product has the advantage of screw head password lock.
Three patents.
Custom side, recessed head design
Make and license to individual users.
Each side of the head has the potential of 20 different angles and 20 different depression depths.
This number is equivalent to more than 16 million uncopied drive configurations and is said to be more than just the front door key.
These fasteners feature specialized screwdrivers or keys, each with its own unique 12-
Digital combination code
The user inserts the key into the head of the screw and twists it until the combination matches in place.
Different from standard tampering
Resistant to fasteners, these bits cannot be obtained in hardware stores. `br``br`
This patented driver provides perfect tamperingproof assembly. Theft-
Proof and decor but cheap.
Special drives that can be used for on-site disassembly or electric fitters.
The unique three-wing slot starts in the center and is tilted perpendicular to the drive without being flat. `br``br`Torx 3-
Split screw and screwdriver with triangle
The shaped socket and head are used in the Netherlands and cannot be found in North America. (
Not sure about the icon or info at all, need to confirm this as I didn't find much). `br`
TP3®It is a new triangular recessed drive that provides great security.
You can submit a 6-
But they never fit or work well.
More and more products are using these security bits;
Game Boy, Nintendo
Fast food promotional toys and video games; Die-cast toys;
Roomba battery.
There are four sizes; A=0. 079" A=0. 091" A=0. 106" A=0. 126".
View player Drive. `br`
There is not much information about these available, but basically a solid triangular groove, but there is a pin center.
It's hard to make a tool for this and give it a tamper-proof rating. `br``br`
Not many tools can work on this tamper-proof screw head without damage.
Use a drive socket with triangular holes.
Simple but effective. `br``br`The Tricle Re-
The safety screws available have a unique pin groove design that allows the groove to be highly tampered
Proof that a special insert bit or key wrench needs to be inserted and removed.
Tricle requires a special drive bit for medium
High torque applications.
The sizes of the screws are M3, M4, M5, M6, M8 and m10. `br``br`Tri-
Arc®The screw head is a new concept, it is a bit and drive design that corresponds to the design of the cross head.
The head has a groove consisting of three leaves.
The groove is based on each convex angle separated by the bending drive flange.
The driver has a drive tip suitable for screws or fasteners and sink grooves 2-
3mm below the surface of the upper flange.
Three surfaces are given.
Arc®The contact area of screws and fasteners is larger, and the surface pressure area is larger.
The main advantages of this new design include increasing the resistance of the Cam compared to Philips or Posidrive, reducing the wear of the drive.
The drill bit is a good tool for sinking wells.
These products may not have been sold in the open market yet, as the inventor requires a company that can develop the product and/or be interested in the license agreement. `br``br`
Trigram®The screws and drives have a flat end, unlike the threeWing®.
The sides are tapered to prevent non-
The driver is designated from the appropriate seat, so both sides encourage camping. `br`
Micro Technology®The cutter uses a dedicated Terzuola screw with grooves for 3 or 4 pin drives.
The outer diameter of all screws may vary depending on the style of Microtech®However, the pin number of the tool should remain the same.
There are 3 sizes for drivers; Small -
Handle screws with 3 holes installed; Medium -
Handle screws with 4 holes installed (
If the knife was made after 2006, it may not have a center hole. )
Basically, if there is another hole in the middle of the outer 3, it is a medium; Large -
Install the pivot screw on the MT side opener and some belt clamp screws.
The current production wrench does not have a center pin, so it can be used on the new screws.
The picture used is a copy of Microtech. `br`
Tampruf®It is Australian and refers to the screw head and nut.
Instead of regular bit prompts, these drivers use a socket-driven system.
Tampruf®There are at least 3 sizes of 1/4 "square drive sockets;
4 sockets, 4 Round Heads and 6 sinking heads;
6 sockets are installed with 6 and 8 round heads, 8 and 10 sink heads;
10 sockets are installed with 10, 12, 14 round heads and 14 sink heads.
Tampruf®There are at least 3 sizes of 3/8 "square drive sockets;
20 sockets are equipped with 10 round heads of 5/16 and 1/4 nuts;
30 outlets of 5/16 and 3/8 nuts;
40 sockets 1/213 nuts. `br``br`
Tamper-proof release reel™Nuts and reels™The Bolt is the final secure fixing.
They provide a smart solution for those situations where you need tamper-proof fixes that can also be undone when needed.
Rolling™Install and remove nuts or bolts with special drive tools.
1/2 "drive safety driver cross-drilling allows it to be used with a" t "rod or standard socket drive.
Tools to match scrolling™The nuts and bolts were registered for the owner, adding additional safety.
Special grooves cut to the outer surface of the rolling nut hold special drive lugs in the recessed Cup to allow the NUT to tighten or release.
As a special manufacturing option, the rolling nut can also be manufactured with only one drive slot, converting the nut into-
Unit in the same way as the shear nut.
Even M6 to m8 available size, even SC6 to sc12 available tool reference. `br``br`Double-
Slot cut screw head, cut offset 90 °, rarely used or seen today.
The advantage of this screw head is that there are 4 ways to engage the screw.
The screw head needs to be thicker and harder to accept the drive.
Otherwise, all other advantages and disadvantages remain the same as the single-slot type drive. `br``br`
Vertical Hi-
The torque groove is milled to the fastener head and has a good performance record where the maximum torque is required.
The system is suitable for the maintenance efficiency that encounters repeated installation and removal of high strength fasteners.
Cup slots help drivers drive automatically
The center saves time and extra convenience.
I have seen it used on the pump head plug. `br``br`
Taiwan's Shuen long hair ENTERPRISE CO. , Ltd. may have other companies to make this unique cross-border
Slot driver head type.
The Lotus Head drive is basically a standard Cross Drive, Ironsmiter further explains:
The slot screw, looks like the slot is produced by a "cheaper process.
Basically, the screw head is separated with a chisel type tool.
The theory holds that the head maintains a complete material strength by not removing any material.
This is a similar theory about how blacksmiths can punch and drift holes that are stronger than holes that are drilled out.
Lotus heads can also be formed by a machine that costs a lot less than a recessed head.
These screws are mainly used for machine assembly.
The constant pressure of the machine to drive the spindle prevents the "jump" of the drill bit "(
If the screw is driven using a manual tool, this will result in a stripped head).
There is a slightly modified Phillips bit used to drive them.
It has a matching tapered and flat bottom.
As ironsmiter also pointed out, the example shown is a "fast line" that allows to be driven at twice the depth of each turn compared to a normal screw.
This is also a kind of self. drilling model.
Mainly designed for plastic.
You will find almost all the cheap plastic radios, lamps and toys together.
These are "improvements" to speed up the manufacture and use of screws ".
I don't know how successful it is.
Just hope you never delete one of them.
Trying to get a standard Phillips bit, even if you modify it for a flat bottom profile, it's a pain to grab these screws (frowning)See end-
Load in the vocabulary.
According to LennyNero of instructures, this head design is not for driving, but is installed in injection plastic or die-cast metal parts.
The strange head shape promotes a good grip on the casting and prevents the screw part from being pulled apart.
He saw a lot of these in the Bolt section of the multi-pillar terminal. `br``br`
These are used to perform tasks™CSD103 and other possible brands of Hockey skates.
These bolts have special tools, but any standard wrench or pliers can be used successfully. `br``br`
Jiangyin Ruyi standard parts company production. , Ltd; China.
Applications of parallelogram head bolts are generally used as blind fastening, in which the head is inserted and then crossed in the Channel or slot and then tightened with a nut.
These heads can be used well with conventional pliers type tools. `br``br`
In 1908, the square drive screw was invented by Peter L of Canada. Robertson. Twenty-
Henry Phillips filed a patent for Phillips head screws eight years ago.
Robertson screws are considered "the first groove-
Driven Fasteners for production.
"Designed to be a North American standard.
Henry Ford used Robertson screws in a car model produced by Ford Motor Company (
One of Robertson's first customers).
More than 700 Robertson screws are used in the T-type.
Ford gave up the screws when Robertson refused to give him the exclusive right to use them.
Robertson also declined to license other fastener manufacturers, so the design spread very slowly.
Many leisure cars built in 1950 use these screws.
Most wood and electric screws in Canada have Robertson groove heads.
The nearly square groove drive allows the screws to be placed on the drive before the screws are in place, so for the first time ever you can start the screws either overhead or tight, instead of fixing the screws on the drive with extra hands.
The Robertson head on the screw is much better than the slot head, because the screwdriver has a lot of resistance to the bayonet of the screw head during installation, and there are 4 possible positions to insert into the drive.
According to the roboguy member of the structure tables, Robertson's design adopts "Morse"
Like "tapered" so that the screws stick to the drill bit even if pressed directly.
This taper enables the cutter bit to insert deeper positions into the groove to obtain more contact surfaces, thus reducing the profile.
To avoid the problem, make sure the screws and drives are all matching types as there are many square drives and screws today that are not Robertson.
See Plaza Avenue (next topic).
There are 6 standard tips for Robertson screwdriver-
Size, no metric.
Orange and orange are rarely used.
The biggest black is quite rare.
Each is usually identified with a handle color instead of a number. Thanks Brian J.
Robertson, Cory
Product Line Manager, North American tools division, responsible for adding information about Robertson size 6 and pointing out all real Robertson Inc.
The power bit and the insertion bit are two types, and they have never produced one type of bit. (
I have changed the reference image as the original image is not really Robertson).
A simple way for consumers to judge whether fasteners come from Robertson
They use theRobertson. ®Products made. 00: orange -used with 1-
2 screws 0: Yellow-used with 3-
4 screws 1: Green-used with 5-
7 screws 2: Red-used with 8-
10 screws 3: Black-used with 12-
14 screws 4: Black-
16 screws together 【[br]]`br`
Only Robertson.
Let Robertson®Screws and drives, others commonly referred to as square drives, are made by several manufacturers and brands as patents have expired on Robertson.
Fang's head is an American clone of Robertson, Canada. ®There is a square groove but there is no cone and there is a very sharp corner.
The difference is likely to be in order to avoid patent infringement.
Patent Robertson®The drive is slightly tapered and slightly rounded.
See Robertson®Rest.
Two manufacturing methods are processing one piece and two pieces.
The workpiece is a forged steel tip press mounted on the parts of the common steel tip bracket.
Several companies have chosen their own brand names to produce square Drive.
Due to the lack of taper, the hole must be oversized relative to the screwdriver and more likely to bend than Robertson®.
Home Depot is really irritating. ®Tools companies like Bosch®DeWalt®Bring the square drive bit into Canada, almost for Robertson®Screws and marketing are equal with no marks.
For any Canadian reader who wants a valid bit, try to buy a colored bit
Coded red, green, black and check if the engraving is the R on the drill bit.
Don & apost believes in cheap bulk packaging.
Never believe Robertson who says "Made in America;
Probably a square Lane.
A "fresh" American Plaza driver with "real" Robertson®The screws are so sticky that it takes a big yank to get them off.
The advertisement says this is the selling point of the American Plaza driver in Canada.
Unfortunately, if you have to pop up the driver, it usually means that you & aposre damaged the tool and it has been harder to use since then.
Real Robertson®The driver will not be affected by Robertson. ®Screws.
So, while they are not as tight as they are, the drivers do hold on for a long time and they are equally good at controlling power.
There are only four sizes and applications in bit size, rarely in colorcoded. `br``br`
Basically a square groove, but the groove also has a temperature-proof center pin.
The center end of the drive must have a fit hole. `br``br`
This is Robertson.
Version of the square drive.
See the Robertson break and the square break.
After all, fairness is fair. `br`br]]
When Henry Phillips purchased a rough cross, the story of this cross-drive screw began
From an inventor named J. in Oregon, the concept of a recessed screw headP. Thompson. Henry F. Phillips (1890 to 1958), a U. S.
Businessmen from Portland, Oregon were lucky enough to name Phillips head screws and screwdrivers after him.
Phillips turned Thomson's invention into a viable form.
Phillips designed a recessed cross screw on the assembly line for efficiency improvement.
The idea is that the screwdriver will turn the screw as the force increases until the driver's tip pops up, called camout.
When tightening the cross screw with a cross screwdriver, you will notice that when the torque becomes too strong, the screwdriver is wound from the screw so that the screw head does not damage or brake.
Phillips also set up Phillips screws in Oregon in 1933, but never really made screws.
He visited every well-known screw manufacturer in the United States and was simply told that screws could not be manufactured.
The screw manufacturer of 1930 s rejected the concept of Phillips as it required the screw head to have a relatively complex recessed socket shape;
Unlike simple milling slots for slotted screws.
Phillips then visited the US Screw Company, a new member of the industry and, despite his engineer's opposition, the new president, Eugene Clark, was personally interested in the new product, like everyone else in the industry, they insist that this is impossible.
According to a printed report, the president of the US Screw Company said: "I finally told my head people that I will issue a pension to all those who insist on not being able to do so.
After that, we developed an effective way to make fasteners and now we have authorized all other big companies to use it.
"The use of Phillips screws has spread rapidly in the automotive industry.
In addition to the two automakers, 1939 of the cars are using it.
By 1940, Phillips screws are being used throughout the automotive industry, although a major manufacturer will still not use them on passenger cars.
Phillips screws and screwdrivers gradually enter other industrial applications;
Then consumer goods, finally appeared in the hardware store.
S. screw company spent about $500,000 in the 1930 s to produce Phillips screws and got a patent for manufacturing methods.
This is the only licensed party to this process.
Screws authorized by US-Japan and monthly foreign companies in 1940 month 10 Am.
Although Henry Phillips was patented in driving design in 1936 (
US patents 2,046,343, US patents 2,046,837 to 2,046,840)
It was so widely copied that Phillips lost his patent by 1949 (
In any case, exclusive protection will only last until 1956. )
Phillips's main contribution is to push the cross head concept to the extent that screw manufacturers and many car companies adopt it.
Henry Phillips died on 1958 at the age of 60eight.
The Phillips system was invented to assemble the aluminum aircraft, with the aim of preventing the fitters from tightening the screws so tightly that the aluminum rebar belt.
The driver will leave before this happens.
The cross screwdriver has four simple slots, each of which is the result of two right-angle machining processes.
The result of this process is that the arm of the cross is tapered and has a slight rounded corner in the tool groove.
Phillips's design is like this, and when extra torque is applied, it will
Not to vacate or destroy the position.
The driver has a point of 57 ° with a blunt tip, tapered wings.
Identified as Type I in the ANSI standard.
In all cross-drive systems, the driver will be on its own
Align with fasteners.
As the tool for forging the head groove of the screw begins to show signs of wear, the cone design that allows the convex and concave may become a problem.
The grooves get lighter and lighter, which means the driver will be below
Going out too fast will cause the driver to driveout early.
Another problem is that Phillips screws are difficult to remove even if it is easy to insert.
The main drawback is that the screwdriver is too easy to pop up, unscrew the screw, planing the work, and usually transfer all the problems of the previous slot design.
Consumers may think that any screw head with a cross-drive groove is Phillips that will cause other problems. `br``br`
Tamperproof screws was founded in the 1970 s when George Friedman developed Phillips®Safety screws.
As its name says, it has an internal pin in the Phillips groove of the head that requires a special insert bit or key wrench to insert and remove.
This unique feature makes the tamper pin Phillips®The screw is tamper-proof and reduces the risk of vandals or intruders tampering with or removing screws.
The Philips/Cross tamper-proof profile has the same properties as the classic Philips/Cross;
The difference is that the tool has a hole in the tip and the screw head has a small center pin.
Anti-theft fasteners are almost impossible to disassemble without matching drivers.
These screws are easy to drive and remove with matching tools, but cannot be removed with Phillips®Guidance on Phillips design of tampering pin®The safety screw is suitable for applications with higher torque and is "two-way.
Size is 1, 2, 3. `br`
Patented Phillips Screw Company to compliment Phillips®Drive.
ACR®Developed for the aerospace industry to avoid expensive head stripping and to ensure easy insertion and removal of screws during assembly and maintenance.
Advanced ACR®Phillips®During the fastener disassembly process, the system enables the driver to work safely with the screws to eliminate damaged screw heads and drives while preventing damage to expensive panels, avionics and structures.
The drive together with the rib-fit surface of the screw head lock provides greater durability.
There are three types of drive bits, but the most common ones are disassembly and drive.
Maintenance staff prefer ACR®Phillips®Because they do not need to put pressure on the driver to reduce the risk of fatigue and injury.
Every time the screws can be safely removed, the cost is reduced, the production efficiency of the workers is improved, the drilling is reduced, and the problems that need to be solved in the overhaul are reduced.
ACR®Phillips®Screws are also compatible with regular Phillips®Drivers who are allowed to modify and repair urgently. `br``br`
Combined drive with classic Phillips design®Cross groove and popular square drive groove.
The result is an efficient multi-function
Driver Service breaks between classes.
This drive system adds drive bit crossover
The section significantly increases the life of the drive bit and reduces the overall tool cost.
Combining the positive features of Phillips®And a square drive with almost no negative features.
Not easy to face;
Higher torque than any of the original drives.
Minimize screw damage and extend the life of the drive tool.
In addition, there is a consistent stick between the drive and the screws, making it difficult to reach the joints a simple task. `br``br`
Also from Phillips Screw Company and very similar Phillips Square
Delhi®Add the added ACR®AntiCamout Ribs.
It has all the advantages of Phillips Square. Driv®.
ACR®It's a reliable stick to reduce camping-
In high torque.
As shown in the figure, the screw head is marked with a double scale. `br``br`
Phillips screws.
Another combined drive system.
There is not much information about this drive on the Internet.
This may mean that the head and drive are not yet common, or that the artist version of the screw head pattern is incorrect.
I question the fine marking line.
Is this really just Phillips II, except for the identification on the bit? ®? `br``br`
Recent evolution of the Phillips family®The design produces the next generation of patents, Phillips II. ®.
ACR®Improvement is basically Phillips. ®Screwdriver with ACR®Ribs make it ideal for assembly lines and home use.
Phillips II®The screw has ribs in the groove of the screw.
Ribs found on white gold tip Phillips II paired with ribs®ACR®Driver PositionThis rib-to-
The rib connection allows the screw to be pushed in and out.
The ribs are on the driving face and the removal face on the wing, or both.
Patented pork ribs against open bones (ACR®)
Ensure fit, easier driving and less fatigue.
Deck teammates™Screws are a good example of these working with the deck. ™The drive position usually comes with screws.
The screw head is marked with a double hash mark with a 45 ° cross groove. The rib-to-
Rib connection allows for greater torque, off
The angle drive, the head that will not break and the screw that will not peel.
You will never have another stripping screw that can't be removed!
You can't drive a square drive or star drive off angle!
Proprietary threads mean faster drives. Patented anti-camout ribs (ACR®)
To ensure fit, easier driving and less fatigue.
Deck teammates™Can drive screws with 2 Phillips®Or 2 square drive bits, but use the Deck Mate for the best performance™Drive bit with ACR®.
You will never have a stripping screw that cannot be removed.
Sgk07072000 said: The deck mate is home to Dabao and they have replaced the manufacturer so they don't use this anymore.
Manufacturer's website: these can now be purchased at a low point under the Phillips II Plus tab. `br``br`
AVA special fasteners Co. , Ltd. was established in 1978.
Quadrex proposed by Canada®It combines the best features of a cross slot and a square socket drive.
Sifang Hotel®The grooves increase productivity by combining the superior torque transfer and fit of the square socket drive with Phillips's ideal on-site repair and remodel function®Drive.
This controllable radius groove is designed for optimal drive engagement while providing clearance for wear and plating accumulation.
Added features include: general purpose applications, increased productivity, reduced inventory, assembly line economy and general acceptance. `br``br`
Robertson/Phillips's idea (Recex)
Combo drive was invented by Robertson.
Milton, Ontario®The only combined drive for Robertson. endorses.
Patented receive X combined groove drives ensure you have the right drive bits at all times to install or adjust the finished woodworking project.
Information provided by Brian J.
Robertson, Cory
Product Line Manager, North American tools division. `br``br`
Later in the ANSI standard is called the cross-drive system of type 2 grooves.
It was developed by a British inventor named Frearson, produced by former Reed and Prince manufacturing in Worcester, Massachusetts, from Late 1930 & aposs to mid-1970 & aposs (
Liquidated on 1990 for the sale of company assets).
Today, it is mostly called Frearson, but occasionally it is still called Frearson by its former name, Reed and Prince.
This drive is very similar to Phillips but has a more sharp 75 Vshape.
Mainly found in marine hardware.
Unlike the Phillips head, the tool groove is a perfect cross shape, which is designed to reveal the back.
Its advantage over the Phillips drive is that a Frearson drive or drill bit is suitable for all Frearson screw sizes, although there are two sizes to choose from.
Advantages include improved torque and minimal camout.
Unfortunately the screw head groove seems to be a Phillips, so it's too easy to use the wrong tool or screw.
Whit3rd, an Instructables member, added: Reed & Prince tip will not weaken, so it will not be installed "normally" in Philips 1, 2 or 3 screws;
Anyone who pays attention to the feel of a screwdriver will not mistake it for Philips. `br`
These are usually referred to as Japanese Phillips.
It is common in Japanese equipment.
JIS look a lot like Phillips screws (
Even more similar to Frearson)
, But is designed to not reveal the back, so the cross screwdriver will damage it if it is too tight.
The head can usually be identified by a single point "dimples" on one side of the cross slot.
Jis B 1012: 1985 screw standard was used in the Asian market and imported products from Japan.
The drive has a 57 ° point with a flat tip and a straight wing.
Many people and companies outside the Asian market do not know what JIS are.
Similar to the appearance of Frearson and Phillips, screws are often damaged when removed and installed with the wrong tool.
The JIS driver can be easily used on Phillips but cannot interact with each other.
It is not easy to find drivers in North America;
Try the local radio-controlled airplane hobby store.
Most RC helicopters install propellers using JIS screws.
Gentry & Joe Katz: talking about the early Japanese motorcycles, like in the 1950s s and 60 s, the first Japanese motorcycle to enter the US was very frustrating.
The case screw looks like Phillips, but all the Phillips driver does is take the groove out.
Both talked about the need to use vice-
Handle, even affect the driver
Because even if this is not appropriate, the impact will push them out.
The country of ISO ScrewFellow instructable Gecik said: Launched in 1970s and early ---
When "movie" was photographic film, I fixed those movie projectors.
Eiki is a Japanese company with 16mm projectors, which are very good and easy to maintain and are widely used in colleges and universities (
At least in America).
The Eiki projector uses what they call an "ISO Screw" and sounds very much like your JIS description.
It is difficult to remove the ISO screw using the Philips screwdriver, but it is easy to use the ISO screwdriver provided by Eiki.
These screwdrivers also work well with Philips.
I have to purchase an ISO screwdriver through Eiki;
A company in Kobe, Japan, made these tools.
Manufacturing companies did not rebuild after the Kobe earthquake. The present-
Day Eiki knows nothing about ISO screwdrivers and they even use them.
The "ISO screw" I remember "---
Can still be seen in VCRs (soon-to-be-extinct also)
Other Japanese manufactured goods have what I call "dimples" or dents/spots on either side of "X.
"I'm pretty much sure what Gecik is referring to because the Eiki ISO screw is actually JIS-
Type screw for ISO rice thread.
Two ways to say the same thing
Just like I call them Yuyama ISO screws.
Look at my own experience in medication.
Dispensing machine made in Yushan, Osaka, Japan.
During the service training of these units, they call it JIS.
The head of each screw has an identification "dimples" which I understand indicates the Cross
Point head is not Phillips.
The screws are also made of rice. `br`Sel-O-
Fit®It is a registered trademark of Cooper Industries.
Bit is designed to provide a more efficient way to drive Pozidriv®Screws.
The drive has a 46 ° point with a flat tip and parallel wings. The Sel-O-
Fit®Bit puts the torque in the part where the drive tip is the strongest and most mechanical.
This allows for more torque to be applied while minimizing the possibility of breakage and open back. `br``br`
Also known as BNAE NFL22-
070 after normalization of the aviation and aerospace standards.
Safety screw drive system.
It is easy to get confused with JIS or Frearson groove screws, but the drive blade is modified to a two-step diameter. `br``br`
Hotel Montauk®Spiral Drive groove developed by Phillips®, Much lighter than other standard grooves on the market, and can be placed in a much lighter head without affecting the strength of the screws.
The assembly allows shallow sinking holes to reduce the material thickness without affecting the strength of the joint, as it does not affect the material thickness below the sinking holes.
Motok®The groove uses full wing contact with the drive bit in the direction of drive and disassembly.
Aerospace designers have to compromise on fastener performance.
Previously, the shallow head style had poor torque transmission and was prone to damage, while the sturdy drive required thicker material and increased weight.
The unique shape provides the driver's full contact on the entire Groove wing, resulting in extremely high torque capability without risk of damage.
The depth of the fastener head groove is minimized, resulting in real high performance in 100 ° flush head and shear head applications.
The open groove concept allows the driver's groove to be misaligned and compensates for paint build-up
Torque performance is not reduced.
Workers can easily install and remove panels and structural fasteners at odd angles without creating high muscle stress or worrying about damaging the surrounding surface.
Large driver crossover
When used with high-load pulse tools, sections and surfaces provide extended tool life and the ability to resist tensile fatigue breaks. `br``br`The Torq-
Set®The Alcoa Fastening System offset the cross fastener system is a proven product in the aerospace market.
Application of the torque required for screws or boltstight, Torq-
Set®Meet the requirements and beat the competitors.
A look at the innovative groove design of Torq
Set®Tell the story.
Its offset cross configuration is certain
The assembly reliability of the original Phillips design is a step toward the final torque drive system. Torq-
Set®Ensure tight torque density to meet the stringent requirements of today's aerospace applications. `br``br`Torq-
Set®ACR®Rib offset cross drive has become the preferred revolutionary fastener system for aviation engineers for military and commercial aircraft, missiles, satellites and weapon systems worldwide.
A single drive inserts and removes fasteners.
Interlocking ribs
Suitable for removing sides that drive the surface of the drill bit and screw-
Even if the threaded fasteners are corroded, seized or frozen, the disassembly of the fasteners can be simplified.
When traveling in any direction with ACR, Camout is never a problem®System.
When the demand for high torque applications is met, Torq-
Set®ACR®The drive system provides superior performance while preventing camper.
Torq-offset cross with interlocking ribs
Set®ACR®There is no doubt that stable driving is unparalleled in design.
Also, all Torq-
Set®ACR®Drive bits and grooves are interchanged with standard Torq-
Set®Components, thus eliminating potential difficulties during emergency site maintenance.
The sizes are 0, 1, 2, 3, 4, 5, 6, 8, 10. `br``br`
Sentinel®The safety screw has a unique head that can be inserted with only a standard "pozi" screwdriver.
For anti-clockwise forces, there is no surface to capture.
This unique feature makes the Sentinel®Safety screws are tamper-proof, reducing the risk of vandals or intruders tampering with or removing screws.
Due to the design of Sentinel®The safety screw is suitable for applications with higher torque and is a type of 1-
Safety screws for permanent damage prevention. `br``br`The 4-
Hole safety nut as the name implies, it has 4 position holes in the nut, which are surrounded by slender circular grooves and require special tools to tighten or disassemble 4-Hole Nut.
This unique feature makes 4-
The hole safety nut is tamper-proof, reducing the risk of vandals or intruders tampering with or removing screws.
Due to the design of 4-
Hole safety nut is suitable for low to medium torque applications and is two-way. `br`
View Microtech®3-Pin.
The picture used is a copy of Microtech. `br`
These screws are now used on some discontinued phones.
No further information was found. `br``br`
The development of multi-tooth transmission systems by Bristol is considered by design engineers to be the best way to transmit torque, as nearly 100% of the torque is applied at right angles to the bearing tooth surface of the socket.
Other drive systems consume a lot of force in the radial thrust and tend to expand the socket rather than tighten the screws.
The large number of effective wrench joints inherent in Bristol's design solve other fastening systems (such as cam-
The wrench "extends, the sleeve is enlarged and the round is inverted ".
The applications suggested by Bristol Spline Drive include screws that require strict tightening and smaller cap screws, as well as screws with shallow sockets.
For frequent removal and replacement of screws and plugs such as tool plug-ins, removal screws, drain/fill plugs, template holders, and worn parts.
In applications where softer screws are required, such as stainless steel or non-
Black material.
A few decades ago, Bristol engineers invented the Bristol spline drive system for electro-mechanical instruments.
They require screws and wrenches that can withstand industrial environments, vibrations, and frequent disassembly and reset.
Bristol wrenches have been continuously produced in the United States since their initial launch.
The usual number of flutes is 6, but some have 4 flutes in diameter.
Size in inches: 0. 048, 0. 060, 0. 069 (4 flute), 0. 072, 0. 076 (4 flute), 0. 096, 0. 111, 0. 145, 0. 183. `br``br`The Torx-
Plus®The safety screw is the upgrade of its predecessor (6-
TX safety screws)
Provide a higher level of security when the design is patented and the drive bit is limited to Torx-
Plus®Distributors.
Torx resistant to damage
Plus®Safety screws have unique 5-
A flap Torx head that requires a special drive bit for insertion, registering the drive bit to limit and control availability.
This unique feature makes TorxPlus®Safety screws are tamper-proof, reducing the risk of vandals or intruders tampering with or removing screws.
Manufacturers around the world are discovering Torx®The drive increases torque transfer, extends tool life, and increases the productivity of the assembly line.
Features include a non-
Symmetric ellipse
Based on geometry;
There are five leaves of solid columns in the center of the depression;
The concentricity and tight tolerances of special tools make them difficult to fake.
Currently, Torx-
Plus®The head and driver were patented, slowing the adoption of the market, but were licensed by many tool manufacturers, including Camcar and Facom.
Control of these licenses is held by Textron. `br``br`
Textron Fastening System is now a global technology company and has developed external Torx-Plus® Low-
Screw drive system.
The external hex drive allows high torque transmission, but can quickly fail due to the inherent weakness of its design. External Torx-Plus® low-
The contour head drive system is designed to provide optimal torque transfer and extended tool life with a head height similar to a hex or disc head fastener.
The drive is in a 0 ° angle.
The flap joint spreads the force over a large area to prevent damage to tools and fasteners caused by a stress riser.
Higher torque transfer capability than the corresponding internal grooves.
The strength of the drive system is 5 to 6 times the torque of the ordinary seat. Excellent high-
Torque drive system for micro fasteners and external Torx®Existing version where the screw head has a Torx shape®Screwdriver and special Torx®The socket is used to drive it.
These are mainly found on the engine of the car. `br``br`
The Cinstar®The safety screw is the upgrade of its predecessor (6-
TX safety screws)
Provides a higher level of security when the design is patented and the drive bit is limited to Cinstar®Distributors.
The riot Cinstar®Safety screws have unique 5-
Flap Torx®A drive that needs a special drive bit to be used for insertion, register the drive to limit and control availability.
This unique feature makes Cinstar®Safety screws are tamper-proof, reducing the risk of vandals or intruders tampering with or removing screws.
Anti-tampering and re-
Secure repair available `br`
Penta®The shape is very difficult to make and Bryce fasteners keep the size secret.
They have tested under very strict safety requirements and have an excellent record.
Pentecost festival®Patented nut safety`br``br`
Products of Bryce fasteners. The Penta-
Head bolts are available when traditional tamper-proof screws cannot be used.
These five-angled heads prevent the removal of traditional sleeves or wrenches.
They're at 3/8-16 and 1/2-
13 sizes, up to 3. 5" long. `br``br`
Products of Bryce fasteners.
The shape of the Pentagon is very difficult to make and the size is secret.
They have tested under very strict safety requirements and have an excellent record.
Nuts with five horns™Patented security
The size of the oversized five-angle anti-theft nut is optional from 5/16 "(M8)to 7/8" (M16).
All nuts have compression rings for binding and sealing, grooves for providing high torque, deep sockets for Bolt overrun, cones for repelling sub-clamps, made of 316 stainless steel material. `br``br`
Geometry of Penta
Plus™Safer than all other tamper-proof screws. Penta-
Plus™Is a proprietary product of Bryce fasteners, configured to retain Torx-pin and Hex-pin tamper-
Resistance.
Other tamper-proof screws are sold on the open market. Penta-
Plus™Sold only by Bryce fasteners to maintain its integrity as highly secure tamperingproof screw. Penta-
Plus™It has been proved to have been tampered.
Resistance and destruction
In some of the most extreme cases (
Protect your laptop at an open kiosk)
No failure.
Next to the key-
Music™Security lock, this is the most tamper-proof screw on the market.
Large center pin.
Configured to keep Torx®Hexadecimal systempin bits out.
The tip of the drill bit is tightly fitted, allowing greater torque than almost all other tamperingproof screws. The Penta-