Difference Between T20 - And Tx20

Because the star shape offers six distinct points of contact, the rotational force (torque) is distributed evenly across a much larger surface area. This allows you to drive screws into hard materials without exerting massive amounts of downward pressure. 3. Extended Tool Life

| Feature | T20 (Torx) | TX20 (Torx Plus) | | :--- | :--- | :--- | | | Pointed, sharp V-shaped valleys | Rounded, blunt lobes (looks like a flower or spline) | | Driver Engagement | Vertical walls contact the fastener | Radial (horizontal) contact – more surface area | | Compatibility | Cannot fit into TX20 fastener | Cannot fit into T20 fastener (too thick) | | Stripping Resistance | Moderate (points wear first) | Excellent (no points to wear) | | Typical Applications | Computer cases, bicycle disc brakes, older cars, household electronics | Automotive seatbelts, brake calipers, Ford & GM engines, high-torque industrial | | Common Torque Limit | ~15–25 Nm (before risk of cam-out) | ~30–45 Nm (before failure) | | Bit Marking | Clearly stamped "T20" | Stamped "TX20" or "IP20" (External Plus) | difference between t20 and tx20

Approximately 3.86 mm (0.152 inches).

If you have spent any time working on modern cars, electronics, or high-end power tools, you have likely encountered the star-shaped fasteners known as Torx drives. However, as engineering tolerances tighten and torque requirements increase, a new standard has emerged to replace the old one. Because the star shape offers six distinct points