Star bolt socket

Star bolt socket DEFAULT

Features High quality brand new Torx star Socket & Bit Set. Drop-forged Chrome Vanadium steel sockets hardened, tempered and fully polished finished with knurled ring. Bits manufactured from Chrome Vanadium steel. Includes male and female TRX-Star* sockets, Security TRX-Star* bits and Sq drive bit adaptor. Perfect For Mechanics & Enginners Torx Security Screws Bits & Holder included Set contain most popular Torx Sizes Drop-forged Chrome Vanadium steel sockets hardened, tempered and fully polished finished with knurled ring. Appropriate for any Torx or Star headed bolts you may come across. Great for gauche areas where using torx's Keys is too difficult. A must set for professional technicalities or passionate DTYER. Supplied in Blow Storage Case. Its instructions are easy to learn and understand. Specifications 1/4" drive female torx sockets e4 / e5 / e6 / e7 and e8 3/8" drive female torx sockets e10 / e12 / e14 / e16 / e18 and e20 1/4" drive male torx bits sockets t8 / t10 / t15 / t20 / t25 / t27 and t30 3/8" drive male torx bits sockets t10 / t15 / t20 / t25 and t27 1/2" drive male torx bits sockets t30 / t40 / t45 / t50 and t55 1/4" drive bit holder Included: 29PC Torx Star Socket Set #Sockets #TwistDrillBits #Woodworking #TorxStarSocketSet #SpiralDrillBits #AutomotiveToolsSupplies #Kit #TorxStarSockets #ScrewdriverBits #gadget #DrillBitsAccessories #ToolKitSet #29pcs #Home #torxbit #ToolCases #TorxStarSocketSe #Automotive


Typical Dimensional Specifications of TORX Sockets or Nut drivers

Typical Dimensional Specifications of TORX Sockets or
Nut drivers For use with External TORX Head Type Bolts.

Socket E-Size



E- 4 .15" 3.8mm
E- 5 .18" 4.7mm
E- 6 .22" 5.6mm
E- 7 .24" 6.1mm
E- 8 .29" 7.4mm
E-10 .36" 9.3mm
E-12 .43" 11.1mm
E-14 .50" 12.8mm
E-16 .57" 14.7mm
E-18 .65" 16.6mm
E-20 .72" 18.4mm
E-24 .87"22.1mm
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Hex vs. Torx Screws & Bits. Which is Better?

It does not take long to discover that there are more types of sockets than flathead and Philips when it comes to bolts or screws. Three of the more popular are hex, Torx, and Star. But what is each type and what are the differences, so you can use the best one for the job?

Hex Socket and Allen Keys

The hex socket is probably the most familiar outside of the flathead and Philips socket design. It consists of a hexagon-shaped socket that fits around the identically designed bolt or nut head. Most people are familiar with the Allen wrench, a hexagon-shaped tool designed to be inserted and turn an item that has a hex socket.

There are two types, the six and twelve-point design for hex sockets. The six-point design is the most familiar and creates the familiar hexagon shape. While the twelve-point is often called a bi-hex or double hex because of the number of points. The twelve-point hex socket is arguably better when working in tighter spaces. This is due to the additional contact points which makes for easier turning even if the conditions are cramped.

Hex Screw and Allen Wrench
You can find hex sockets in many different devices which include automobiles, construction work, electrical systems, and so forth. Hex sockets are one of the most common designs with many uses. It is why carrying around Allen wrenches is important because they will be needed in such situations.

What is a Torx Screw and Torx Bit?

A TORX® drive is a 6-point contact socket design that is patented. The design superficially appears like the hex socket thanks to the six-sided shape. However, the Torx drive profile is really a star pattern. Hence this drive system is often called a star screw although the official generic name is hexalobular internal.

Torx screw and torx key

You can see the extended points where the corners of the hex pattern would normally be. The result is better overall contact with a screwdriver that features a star socket.

The Torx drive is commonly found in socket-headed screws that you can use with counterbore or countersink. You will use a Torx screwdriver, a wrench, or a Torx bit on an impact driver to drive the fastener. Similar to hexagonal bolts, you can get the inverted Torx screw that has a solid head with a star profile.

The Torx was first developed in 1967 by a company known as Camcar Textron, with the name being a derivative of the company itself. You can find Torx designs in automobiles, motorcycles, computers, and consumer electronics. The original effect, whether intended or not, was to help make items being held in place by Torx screws and bits to be tamper proof. This is because the Torx design for tools was not commonly found and Allen wrenches do not turn them.

Advantage of Torx Screw – Security

With the design becoming more common, you can find Torx designs in many different devices and machines. Although there are new versions that retain some of the tamper-resistant qualities, meaning that only specifically designed wrenches or screwdrivers can remove the Torx screw or bolt.

The most common security feature is the hole that is drilled into the center of the socket. This hole allows the driver to slip over the pin that is found on Torx security screws. A standard Torx screwdriver will not work because the pin prevents it from fully entering the socket.


The size of the Torx will depend on whether it is an internal or external design. For internal designs, the measurements range from T6, which is 1.6mm from point to point, to T100, which is 22.1mm from point to point.

External Torx design ranges in size from E4, which is 3.8mm from point to point to E24, which is 22.1mm from point to point.

Star Socket and Star Screwdriver

The Star socket and screwdriver are common names for the copyrighted TORX® drive. They are basically identical with both working in each type of socket or screwdriver. The only differences are in terms of tamper resistance in which you may need a specific tool to remove a bolt or screw that has a Star or Torx design.

You will see the term “Star” used by companies that manufacture their own tools and bits to be used on Torx sockets but include differences that take them outside the Torx design which is still patented. So, you can be confident that a Star bit will fit into a Torx socket. Plus, you may see improvements over the standard Torx design in terms of bit or screwdriver itself.

Philips Screw

Sometimes people mistakenly call Philips screws star screws. This is incorrect. A Philips screw has a crosshead drive profile with 4 contact points whereas a Torx or star drive has 6-point contact.
Torx head vs phillips screw
Although the + shape of Philips drive can take more torque than the single slot drives, it cannot match the superior hexagonal or Torx profiles.

Hex or Torx Which One is Better?

Better is probably not the right word to use when comparing hex, Torx, and star sockets, bits, and screwdrivers. But all three indeed have their advantages, even if though there can be a subtle difference between the Torx and star which are essentially the same.
Torx vs hex screws


Hex sockets are still the most common, which makes them easier to find Allen wrenches. If you have Torx or star screws or bolts on a device, then you might consider replacing them with hex sockets. This makes it easier to find the right Allen wrench and remove them when necessary. Although Torx wrenches and screwdrivers are becoming more common.


Conversely, if you want to make your device or item more difficult to be taken apart, then switching to security Torx sockets offers better protection. Thanks to the pin design, this type of screws are more difficult to remove without the right tool. Of course, someone who steals your device with such sockets may find other ways of getting inside.


As mentioned before, the differences between Torx and Star are subtle in that both are identical in terms of function. However, Star sockets and bits may have a small advantage because they use non-Torx designs in their products. This means that they may use superior designed to help you manipulate Torx sockets for a tighter fit or easier removal.

Keep in mind that there are different sub-types to each design, most notably the twelve-point hex socket which offers more surface and a tighter grip compared to the standard six-point version. You’ll want to double-check to ensure that you have the precise tool for the job of inserting or removing screws or bolts with a design subset.

And that is the difference between hex, Torx, and Star sockets and screwdrivers. Each has its advantages which make them quite popular when used in the automotive, computer, and electronic fields. This will help you make the best-informed decision about what to use when needing a specific socket.


Home » Hand Tools
2 Easy Ways To Remove (Star) Torx Screws WITHOUT A Torx Driver! Open A Tablet, XBOX Or Smartphone

13 pc. Torx Bit Socket Set

Shallow Socket(s) Included true

Intermediate Socket(s) Included false

Deep Socket(s) Included false

Spark Plug Socket(s) Included false

Chrome Vanadium Steel true

Set Type Multi-Bit & Nut Driver Set

1/2-in Drive Ratchet Included false

3/8-in Drive Ratchet Included false

1/4-in Drive Ratchet Included false

3/4-in Drive Ratchet Included false

Number of Quick Release Ratchets 0


Socket star bolt


Features & Benefits

  • Socket mirror polish chrome-vanadium finish that resists abrasion and corrosion
  • Bits are manufactured with S2 steel and finished with zinc phosphate coating for corrosion resistance
  • High-visibility markings for easy ADV identification
Full Details Below

Features & Benefits

  • Socket mirror polish chrome-vanadium finish that resists abrasion and corrosion
  • Bits are manufactured with S2 steel and finished with zinc phosphate coating for corrosion resistance
  • High-visibility markings for easy ADV identification
  • Designed to be used on Ford Shield bolts

Return Policy *

30-Day Risk FREE return for refund or replacement
If you are not 100% satisfied with your returnable items, return the product for a refund.

* Applies to all purchases made on excluding Toolboxes, Tool Carts, Diagnostics, Welders, Shop Equipment and shipped items weighing more than 150 pounds; Excludes all Gifts and Branded Apparel items except branded apparel size exchanges for exact items. See your Authorized Matco Tools distributor for warranty or return information on purchases made offline.


Drive Size3/8"Weight0.14lbs.
Product Length1-22/25"FinishChrome
Drive O.D.7/10"Number of PointsTorx
Socket Length TypeStandardSocket TypeChrome

3/8" DRIVE T35 STAR BIT SOCKET is rated 5.0 out of 5 by 1.

Rated 5 out of 5by Keenanfrom It does exist.The T35 does exist, was told it didn't. Matco came through when nobody else could.

Date published: 2021-07-04

Harbor Freight Icon External Torx Sockets Review
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  • What type of socket or wrench for 'star' bolts?

  1. 02-23-2011, 12:45 PM#1
    Join Date
    Jan 2010
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    2006 BMW 330i

    What type of socket or wrench for 'star' bolts?


    In the middle of the rear door jam of the e90 is a black device that I presume stops the door from opening too far. There is a black 'star' bolt head (assuming it is aluminum even though it is painted back) attaching it to the car jam body. This bolt is loose and needs to be tightened. Anyone know the size and name for this type of socket pattern? Thank you. <--- It looks like this is the type of pattern.
    Last edited by Razor2010; 02-23-2011 at 12:52 PM.

  2. 02-23-2011, 02:35 PM#2
    Join Date
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    Ottawa Ontario CANADA
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    2013 335 xDrv M-Sprt 6MT
    It is not a [ame=""]torx [/ame]screw/bolt?
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  3. 02-23-2011, 04:03 PM#3
    Join Date
    Jan 2010
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    2006 BMW 330i
    Quote Originally Posted by mryakanView Post
    It is not a torx screw/bolt?

    Hi, it could be but it is in the inverse of what is shown on that link. I will post a pic of the bolt either tonight or tomorrow. Thanks. <--- #8 in that diagram. I will post a pic later. I just know I don't have that type of socket in my socket set that would work on that. <--- these are what I need to tighten the bolt. Wish I knew the size though. So you are correct it is an External Torx. Thank you.
    Last edited by Razor2010; 02-23-2011 at 04:13 PM.

  4. 02-23-2011, 06:02 PM#4
    Join Date
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    2006 BMW 330i

  5. 02-24-2011, 10:00 AM#5
    Join Date
    Apr 2008
    Republic of Texas
    My Cars
    2008 328i coupe
    Best guess is that it is a female torx socket you need. Probably pick up a set of them at your local Wal-Mart.

    Do you have a Wal-Mart in the Bahamas???
    Resident Octogenarian and teaching five grandchildren about safety and shooting.

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  6. 02-24-2011, 10:40 AM#6
    Join Date
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    Hull, Quebec
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    09 328i Premium
    To every expert there is always an equal and opposite expert.

  7. 02-24-2011, 11:10 AM#7
    Join Date
    Apr 2010
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    2008 328xi, '83 944
    May as well just pick up a whole set. Never know when you might need one for something else. If you're in a pinch and lucky a 12pt socket MIGHT work. Key word being MIGHT. You might also strip the head off the bolt.

    Or vise grips lol. I use those for everything too.

  8. 02-24-2011, 11:46 AM#8
    Join Date
    Jan 2010
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    2006 BMW 330i
    Quote Originally Posted by Hollywood DView Post
    May as well just pick up a whole set. Never know when you might need one for something else. If you're in a pinch and lucky a 12pt socket MIGHT work. Key word being MIGHT. You might also strip the head off the bolt.

    Or vise grips lol. I use those for everything too.
    Thanks for the replies. If you look at my pic you will see that it requires a socket type tool to tighten it. I guess you could grab it with a needle nose vice grib but you would more than likely strip it while trying to turn it as it would require lots of torque to tighten this properly. These bolts are aluminum and I would imagine they can strip easier than standard bolts so I think the correct tool is a must.

  9. 02-25-2011, 10:33 AM#9
    Join Date
    Apr 2008
    Republic of Texas
    My Cars
    2008 328i coupe
    I doubt that it's aluminum...probably plated steel.
    Resident Octogenarian and teaching five grandchildren about safety and shooting.

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  10. 02-25-2011, 05:19 PM#10
    Join Date
    Feb 2011
    Baltimore, md
    My Cars
    Find a snap on truck or mac tools truck. They should be able to help

  11. 02-28-2011, 02:43 PM#11
    Join Date
    Oct 2009
    Tucson, Az, USA
    My Cars
    2010 328i Touring
    Quote Originally Posted by KeeldrethView Post
    Find a snap on truck or mac tools truck. They should be able to help
    Neither of these tool suppliers have female torx sockets. FACOM or another European tool manucaturer is a better since these fasteners are used by the European auto industry.
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  12. 02-28-2011, 08:56 PM#12
    Join Date
    Sep 2010
    Westfield, MA
    My Cars
    2007 BMW 328xi coupe
    They're called inverse or inverted torx sockets (not female torx). Can't tell you what size you need until tomorrow, but most auto part stores sell them in singles so you don't need to buy a whole set. They're usually gear wrench brand (which you can also get at sears) and run about 5-6 bucks a piece. I have a nice large Cornwell set I picked up when I used to work as an automotive tech for about $80 which was a great deal for a whole set

    Quote Originally Posted by pinarelloView Post
    Neither of these tool suppliers have female torx sockets. FACOM or another European tool manucaturer is a better since these fasteners are used by the European auto industry.
    Incorrect I know for a fact both snapon and mac (as well as matco and cornwell) all make them. Snapon refers to them as "external torx." View them here:

    The set I own is made by cornwell. But I recall seeing them on the matco and mac tool trucks in the past as well. No need to buy from a European manufacturer. And for the OP's likely 1 or 2 time use, an individual one from his local parts store or sears will work fine. I know Advance Auto carries them as I manage one of their stores. Lots of options to choose from they're not hard to find
    Last edited by bhess16; 02-28-2011 at 09:02 PM. Reason: Automerged Doublepost

  13. 03-01-2011, 12:49 AM#13
    Join Date
    Sep 2010
    My Cars
    2007 E90 335i
    I'm actually also looking for a set of these star sockets and some bigger torx bit (I have a set of smallest-med). Can anybody say what the common sizes are in e9x ?
    I'm about to do a lot of DIY, OC retrofit/upgrade, etc.

  14. 03-02-2011, 03:41 PM#14
    Join Date
    Apr 2008
    Republic of Texas
    My Cars
    2008 328i coupe

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"Star key" redirects here. For the key on a telephone keypad, see asterisk § Telephony.

A security Torx L-key and fastener with holes for a safety pin to hinder disassembly with an ordinary Torx key.

Torx (pronounced ) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967[1] by Camcar Textron.[2] A popular generic name for the drive is star, as in star screwdriver or star bits. The official generic name, standardized by the International Organization for Standardization as ISO 10664, is hexalobular internal.[3] This is sometimes abbreviated in databases and catalogs as 6lobe (starting with the numeral 6, not the capital letter G). Torx Plus,Torx Paralobe and Torx ttap are improved head profiles.[4]

Torx screws are commonly found on automobiles, motorcycles, bicycle brake systems (disc brakes), hard disk drives, computer systems and consumer electronics. Initially, they were sometimes used in applications requiring tamper resistance, since the drive systems and screwdrivers were not widely available; as drivers became more common, tamper-resistant variants, as described below, were developed.[5] Torx screws are also becoming increasingly popular in construction industries.

Principles of operation[edit]

The angle between the plane of contact between tool and fastener and the circumferentially directed force is much closer to 90° in a Torx type of head (lower) than in a conventional hexhead (upper). (Exaggerated for illustrational purposes)

By design, Torx head screws resist cam-out better than Phillips head or slot head screws.[1] Whereas the tendency of Phillips drivers to cam out under excessive torque has been listed as a feature preventing damage to the screw-head or driver,[6] Torx heads were designed to prevent cam-out. The development of better torque-limiting automatic screwdrivers for use in factories allowed this change. Rather than rely on the tool to slip out of the screw head when a desired torque level is reached (which risks damage to the driver tip, screw head, and/or workpiece), torque-limiting driver designs achieve a desired torque consistently.

The Torx design allows for a higher torque to be exerted than a similarly sized conventional hex socket head without damaging the head and/or the tool.[1] The diagram depicts the interaction between the male and female components of a conventional hex drive and a Torx drive. The clearance between the components is exaggerated for clarity.

The green circle, passing through the six points of contact between the two components, represents the direction of the rotational force being exerted at each of those points. Because the plane of contact is not perpendicular to this circle, a radial force is also generated which tends to "burst" the female component and "crush" the male one. If this radial force component is too great for the material to withstand, it will cause the corners to be rounded off one or both components or will split the sides of the female part. The magnitude of this force is proportional to the cotangent of the angle (depicted in orange) between the green circle and the contact plane.

For the Torx type of design, the angle is much closer to 90° than in the case of the hex head, and so for a given torque the potentially damaging radial force is much lower. This property allows the head of the fastener to be smaller for the same required torque, which can be an advantage in applications where space to accommodate the head is limited.


Torx head sizes are described using the capital letter "T" followed by a number ranging from T1 to T100.[7] But some manufacturers and resellers head sizes are also abbreviated using "TX" or "Tx" in front of the number.[8][9] A smaller number corresponds to a smaller point-to-point dimension of the screw head (diameter of circle circumscribed on the cross-section of the tip of the screw driver). Common sizes include T10, T15, and T25, while T35 and T47 tend to see specialized use. Only the proper driver can drive a specific head size without risk of damaging the driver or screw. The same series of Torx drivers is used to drive SAE, metric and other thread system fasteners, reducing the number of bit sizes required.

The "external" variants of Torx head sizes (see below) are described using the capital letter "E" followed by a number ranging from E4 to E44.[10] The "E" numbers are different from the "T" numbers of the same size: for example, an E4 Torx socket fits a T20 head.[7]

Size Point-to-point distance Maximum torque range ~ E Torx
(in) (mm) (lb·ft) (N·m)
T1 0.035 0.90 0.015–0.022 0.02–0.03
T2 0.039 1.00 0.052–0.066 0.07–0.09
T3 0.047 1.20 0.10–0.13 0.14–0.18
T4 0.053 1.35 0.16–0.21 0.22–0.28
T5 0.059 1.50 0.32–0.38 0.43–0.51 E2
T6 0.069 1.75 0.55–0.66 0.75–0.90
T7 0.083 2.10 1.0–1.3 1.4–1.7
T8 0.094 2.40 1.6–1.9 2.2–2.6
T9 0.102 2.60 2.1–2.5 2.8–3.4
T10 0.110 2.80 2.7–3.3 3.7–4.5
T15 0.132 3.35 4.7–5.7 6.4–7.7
T20 0.156 3.95 7.7–9.4 10.5–12.7 E4
T25 0.177 4.50 11.7–14.0 15.9–19 E5
T27 0.201 5.10 16.6–19.8 22.5–26.9
T30 0.220 5.60 22.9–27.6 31.1–37.4 E6
T35[12]0.232 5.90 E7
T40 0.266 6.75 39.9–48.0 54.1–65.1 E8
T45 0.312 7.93 63.4–76.1 86–103.2
T50 0.352 8.95 97–117 132–158 E10
T55 0.447 11.35 161–189 218–256 E12
T60 0.530 13.45 280–328 379–445 E16
T70 0.618 15.70 460–520 630–700 E18
T80 0.699 17.75 696–773 943–1,048 E20
T90 0.795 20.20 984–1,094 1,334–1,483
T100 0.882 22.40 1,359–1,511 1,843–2,048 E24


  • A version known as Security Torx, Tamper-Resistant Torx (often shortened to Torx TR) or pin-in Torx contains a post in the center of the head that prevents a standard Torx driver (or a straight screwdriver) from being inserted.
  • An External Torx version exists, where the screw head has the shape of a Torx screwdriver bit, and a Torx socket is used to drive it. The external “E” Torx nominal sizing does not correlate to the “T” size, (e.g. an E40 socket is too large to fit a T40 Torx bit, while an E8 Torx socket will fit a T40 Torx bit[7]).
  • Torx Paralobe is a further developed Torx Drive System with 6% longer Flanks which results in a 20% higher applicable torque.[15]
Size Point-to-point distance[7]Standard fastener selection[10]
(in) (mm) SAE Metric
E4 0.15 3.8 #6 M3
E5 0.19 4.7 #8 M4
E6 0.22 5.6 #10 M5
E7 0.24 6.1
E8 0.29 7.4 1/4" M6 & M7
E10 0.37 9.3 5/16" M8
E12 0.44 11.1 3/8" M10 & M11
E14 0.50 12.8 7/16" M12
E16 0.58 14.7 1/2"
E18 0.65 16.6 9/16" M14
E20 0.72 18.4 5/8" M16
E24 0.87 22.1 3/4" M18 & M20
E28 7/8" M22
E32 1" M24 & M27
E36 1-1/8" M30
E40 1-1/4" M33
E44 1-3/8" M36
  • A Torx successor, Torx Plus, was introduced around 1990 when the original Torx patent was expiring. Torx Plus patent expired in 2010.[16] The lobes are more square to allow for higher torque and to minimize wear. The name is shortened to IP (Internal Plus) with sizes ranging from 1IP to 100IP [17] (sometimes listed as IP1 to IP100 [18]) and EP (External Plus) with sizes ranging from 1EP to 42EP as well as smaller sizes ranging from H7EP to H2EP and includes five-lobed tamper-resistant variants.[17] The specifications for these licenses are held by Textron. Standard Torx drivers can be used to drive Torx Plus screws, but not to full torque because of the loose fit. Torx Plus drivers will not fit into standard Torx screws.
    • A tamper-resistant version of Torx Plus exists having five lobes rather than six, plus a solid post in the center, and is used for security as the drivers are uncommon.[19] Though Acument (formerly Textron) lists no designation,[20][21]TS[22] or IPR[23] may be seen. The screw may alternatively be a Pentalobe.
    • Torx Plus Maxx Stems is a highly specialized variant used on the ends of fasteners opposite the bolt-head, and provides higher torque than other drive systems allow.[24] Torxstem is a stud with the Torx Plus Maxx drive on both ends.
  • An improved version of Torx called Torx ttap was developed in which features a second recess to create a "stick-fit" engagement (named Frixion Fit), designed to minimize wobbling (named Stable Drive) without pressing and the need for magnetic bits, a feature that can be important to certain industrial users.[25] Standard Torx drivers can be used to drive Torx ttap screws, but Torx ttap drivers will not fit standard Torx screws.[26]
  • AudiTorx is a tamper-proof fastener where a convex and smooth fastener head is topped with a break-away Torx drive that snaps off when the engineered torque is reached, leaving a rivet-like bolt head that can't be easily removed. The main application for these fasteners is in the railroad industry.[27]

Competitive variants[edit]

AW drive is a hexalobular-type screw head similar to Torx, with a tapered profile to aid in centering, developed by the Würth Group in Germany.[28] It is available in five sizes: AW 10, AW 20, AW 25, AW 30 and AW 40.[29]


  • Torx bits T15, T20, T25, and T30

  • Closeup of Torx screwdriver tip

See also[edit]


  1. ^ abcU.S. Patent 3,584,667, Bernard F. Reiland, "Coupling arrangement and tools for same", filed 1967-03-21
  2. ^ Camcar eventually became part of Textron Fastening Systems in the 1990s. In 2006 Textron Fastening Systems was sold to Platinum Equities, LLC, of Beverly Hills, California. They renamed the company Acument Global Technologies, which as of 2010 includes Avdel, Camcar, Ring Screw, and others. In 2014, Acument was sold from Platinum Equity to Fontana Gruppo.
  3. ^ISO 10664:2005,, retrieved 2012-01-14
  4. ^"What is a Torx screw?". Fastener Engineering. 2020-08-12. Retrieved 2021-10-04.
  5. ^Paul Sharke (June 2005). "Fast and Secure: how much proof is tamperproof?". Mechanical Engineering. 127 (6): 32. ISSN 0025-6501. Archived from the original on 2007-02-09. Retrieved 2012-01-14.CS1 maint: bot: original URL status unknown (link)
  6. ^"US Patent #2,474,994 Claims, Page 7".
  7. ^ abcde"Chart of Torx fasteners and tools". Wiha Tools USA. Archived from the original on 2015-12-26. Retrieved 2012-01-14.
  8. ^"Torx bits".
  9. ^GmbH, Contorion. "Contorion: digitaler Fachhändler für Handwerk und Industrie".
  10. ^ ab"TORX Drive System"(PDF). Textron Fastening Systems. Archived from the original(PDF) on 2007-01-02.
  11. ^ISO 10664:2014 - Hexalobular internal driving feature for bolts and screws
  12. ^"2 Pcs T35 3/13 Torx Head Screwdriver Link 1/2 Square Mechanic Drive Socket".
  13. ^"FTX47E, Socket Driver, TORX, GM-Style, T47".
  14. ^"Fiero Torx Sockets".
  15. ^Media, Miller. "TORX® PARALOBE® Drive System | Acument Global Technologies". Retrieved 2019-07-11.
  16. ^[1], "Drive system for prosthetic fasteners", issued 1990-02-13 
  17. ^ ab"TORX PLUS Drive System"(PDF). Acument.
  18. ^"TORX PLUS Long arm L-Keys". Wiha Tools USA. Archived from the original on 7 October 2015. Retrieved 14 July 2016.
  19. ^Egon Pavlis (16 March 2010). "When a Phillips is not a Phillips Plus So Much More!". Instructables.
  20. ^"Fastening Solutions"(PDF). Acument.
  21. ^"Tamper-Resistant TORX PLUS Drive System"(PDF). Textron Fastening Systems. Archived from the original(PDF) on 2006-11-10.
  22. ^"TS Star Bits (5 Sided) 1/4"D 7pc - Part No. 3389 - Part of the TS Star/Torx* Plus range from Laser Tools". Retrieved 14 July 2016.
  23. ^"Security TORX PLUS Insert Bits". Wiha Tools USA. Archived from the original on 13 December 2015. Retrieved 14 July 2016.
  24. ^"TORX PLUS® MAXX Drive System".
  25. ^"TTAP Fastener". Acument Global Technologies. Retrieved 26 February 2017.
  26. ^"Torx ttap Advantages". Ttapdrive AS. Retrieved 26 February 2017.
  27. ^"Acument Industrial fastening systems".
  28. ^"Technical Information on Fasteners: Design recommendations 11.1 Inside drives for screws – AW drive (AW-Antrieb)"(PDF). Adolf Würth GmbH & Co. KG. Retrieved 2 March 2017.
  29. ^"Construction Range Overview (Fasteners: Introducing the AW Drive System, p. 3)"(PDF). Würth New Zealand. 2016.

External links[edit]

  • Media related to Torx at Wikimedia Commons

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