The Difference Between T20 and TX20 Torx Bits Explained When working on a DIY project or repairing machinery, choosing the correct tool is vital. Using the wrong screwdriver bit can strip screws and damage your hardware. Two terms that frequently cause confusion in the fastening world are and TX20 .
While the drive size is identical, you may encounter different that are often grouped under these labels: TORX - T, TX, E and IP. What is the difference?!
The Phillips head was actually designed to let the screwdriver slip out (cam-out) when the screw became too tight. This prevented over-tightening in early factory assembly lines. However, for modern building, cam-out is a nuisance that strips screw heads. Torx and TX drives feature straight sidewalls that prevent the bit from climbing out of the screw. 2. Higher Torque Transfer difference between t20 and tx20
Think of a standard flathead screwdriver vs. a flathead with a hole in the middle. The T20 is the standard; the TX20 is the "keyed" version.
It is important to distinguish the standard T20/TX20 from other similar-looking drive systems that are interchangeable: The Difference Between T20 and TX20 Torx Bits
In the past, some manufacturers may have used the "TX" prefix to avoid paying licensing fees or to differentiate their branded tools or screws, similar to a store brand version of a common product. Today, the distinction has largely disappeared, and "T" and "TX" are used interchangeably by most major brands. For example, companies like manufacture bits labeled as "TX20", while Milwaukee makes "TX20x150mm" bits, explicitly clarifying in the description that it's for a "Torx 20" screw. Bahco and Wiha are other examples where a product may be listed as a "T20" but have a specification of "TX20".
Always verify information with manufacturers or industry-standard documentation for the most accurate and relevant details. While the drive size is identical, you may
Understanding the strengths of each system explains where they are most commonly found.
The is a member of the standard Torx fastener family, officially designated as ISO 10664 . Invented by Camcar Textron in 1967, the Torx drive was revolutionary because it replaced the hex (Allen) head. Unlike hex heads, which experience "cam-out" (the bit slipping out under high torque), the straight vertical walls of the Torx design allowed for higher torque transfer.
is a frequent technical prefix used by certain brands (like Wera or Bosch) and in some European markets to denote the same 6-pointed star profile. Compatibility
Many specialized composite decking screws use a T20/TX20 drive size to ensure deep engagement when driving screws flush into dense materials. Crucial Variations: When Bits Actually Differ