TORX SCREW SIZE CHART
| Screw Size | Torx Socket Set Screw | Torx Socket Cap Screw | Torx Pan Head Screw | Torx Flat Head Screw |
| #2 | T3 | - | T7 | T6 |
| #3 | T5 | - | T8 | T7 |
| #4 | T6 | T10 | T9 | T8 |
| #5 | T7 | T10 | T10 | T9 |
How to measure Torx size?
- To measure from one position to the one immediately opposite, align the ruler on the star-shaped screw tip.
- Examine the ruler marks and make a note of them.
- Dick Kostelnicek; Determining the Size of a Torx Screw; Home Metal Shop Club; 2003.
What is the smallest Torx bit size?
What is the smallest Torx bit size? For use with Internal Socket Head Type TORX Screws . Size Inch P to P Metric P to P; T1.031.81mm: T2.036.93mm: T3.046: 1.10mm: 36 Related Question Answers Found Is Torx the same as Allen?
What are the sizes of Torx bits?
Torx screws and drive bits are available in 24 sizes, labeled "T1" through "T100," and measure between 0.031 and 0.871 inches from one point to another. This six-pointed style, commonly known as a star bit, is also referred to as hexalobular.
What size Torx bits are available?
The Torx bits have this particular feature of start structure at the end, so it is also known as star bits or star screwdriver. What sizes do Torx come in? It is available in five sizes: AW 10, AW 20, AW 25, AW 30 and AW 40.
How do I know my Torx size?
Line up the ruler on the star-shaped screw tip to measure from one point to the point directly opposite.Examine the markings on the ruler and write them down.Compare the measurement with the "P to P" (point to point) column of the first chart on the Wiha website to determine your Torx bit's exact T-size.
Is Torx metric or SAE?
Finally, a note on sizing and nomenclature: One of the beauties of Torx sizes is that they are universal, meaning there is not an SAE vs Metric version. They are all the same.
What size is a T50 Torx?
For use with Internal Socket Head Type TORX ScrewsSizeInch P to PMetric P to PT30.216"5.52 mmT40.260"6.65 mmT45.306"7.82 mmT50.346"8.83 mm20 more rows
What size is Torx 40?
T40 x 2"High quality T40 (T-40) Torx/Star drive bit 2" long. Torx Bit size is engraved on driver bit for convenience....BrandJake SalesSizeT40 x 2" (EACH)MaterialTool Alloy SteelDrive SystemStar, Torx, Hex1 more row
Can you use an Allen key instead of Torx?
The size designations don't match up, but if you loose your Allen wrenches, Torx wrenches can be used instead.
Are star and Torx the same?
The difference between Torx Bits vs Star Bits is that Torx is the trademark name, while star represents the generic descriptor – the terms can be used interchangeably, as the tools are identical.
Is T20 bigger than T25?
The Full Comparison And although they both weigh 1.6 ounces and measure 1.75 x 6 x 1.75 inches, the T20 comes with a slightly wider tip rail. This makes the sound it produces darker and the tone more focused than what you'd hear with the T25.
What size is a T10 Torx?
107" 2.74 mmTorx Screw SizesTorx SizeImperial Point to Point (inches)Metric Point to PointT8.090"2.31 mmT9.098"2.50 mmT10.107"2.74 mmT15.128"3.27 mm20 more rows•Aug 1, 2019
What are the most common Torx sizes?
Some of the most common sizes are T10, T15, and T25, but there are many specialized sizes including T47 and even T5. 5.
What can I use instead of a Torx socket?
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.
What size Torx is between T15 and T20?
Torx Screw Size ChartScrew SizeTorx Socket Set ScrewTorx Truss Head Screw#8T8T15#10T10T20#12T10T251/4T20T279 more rows
What size is a T30?
Drive Sizes for Star Drive ScrewsStar Drive Metric Machine ScrewsDiameterDrive size4mmT205mmT256mmT303 more rows
Is there such a thing as metric Torx?
Metric Torx Pin-In Screws, also known as Metric 6-Lobe Pin-In Screws, are tamper resistant screws that require a special pin-in hex driver to install.
Is SAE standard or metric?
SAE wrenches use the imperial measurement system, mostly used in the United States, where it's described using inches, or fractions of an inch. For this, you'd get a 1/3inch wrench or socket.
Does Ford use metric or SAE?
Registered. With a few exceptions of really old carryover parts (like the 8.8 rear axle in a Crown Vic), Fords and all manufacturers are metric and have been for quite some time.
Does SAE mean standard?
SAE, or standard, is used on most domestic models, while metric applies to foreign or non-domestic vehicles. Socket sets and wrench sets are among the most used tools in cases where size measuring differences are important. Notably, SAE tools are measured in fractions of inches, from 5/32 to 2 ½ inches.
What is Torx bolt?
Torx is a relatively new type of bolt that was designed in 1967. It has a unique head pattern that has 6 points which makes it unique and also very capable. There are many different types of torx bolts but they can be categorized in internal and external. With internal bolts, the head has the pattern implemented into the inside of the bolt, ...
What is external Torx?
A second and a newer type of torx is external torx. It has the entire head shaped in the well-known torx pattern, hence the name. These bots are more common in large sizes and they are commonly used in the car industry.
What is Torx Paralobe?
Torx Paralobe is a further developed Torx Drive System with 6% longer Flanks which results in a 20% higher applicable torque.
What is Torx screwdriver?
Torx (pronounced / tɔːrks /) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 by Camcar Textron. 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, ...
What is the angle of a Torx head?
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.
What is the angle between the plane of contact between tool and fastener and the circumferentially directed force?
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 hex head (upper). (Exaggerated for illustrational purposes)
What is Torx TR?
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.
What is Torx design?
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. 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.
When was Torx Ttap developed?
An improved version of Torx called Torx ttap was developed in 2005, 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.
Overview
Variants
Although the brand "Torx" generally refers to the standard 6-star-driver or -socket, there are many variations to the original design, including a number made and/or licensed by Torx. Other tool manufacturers have been producing 8-, 10- and 12-point star drivers and sockets for many decades. The Torx brand is often used universally to describe these and other star driver variations.
Principles of operation
By design, Torx head screws resist cam-out better than Phillips head or slot head screws. 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, Torx heads were designed to prevent cam-out. The development of better torque-limiting automatic screwdrivers for use in factories allowed this change…
Sizing
Torx head sizes are described using the capital letter "T" followed by a number ranging from T1 to T100. But some manufacturers and resellers head sizes are also abbreviated using "TX" or "Tx" in front of the number. 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 t…
Competitive variants
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. It is available in five sizes: AW 10, AW 20, AW 25, AW 30 and AW 40.
Gallery
• Torx bits T15, T20, T25, and T30
• A Torx wrench
• Closeup of Torx screwdriver tip
• A Torx T30 bolt
See also
• Wrench
External links
• Media related to Torx at Wikimedia Commons