Torx Screw Selection Guide: Types, Materials, Finishes & Applications

torx screw Selection Guide: Types, Materials, Finishes & Applications

Proper Torx screw selection requires considering type, material, finish and application to avoid cam-out, rust and failure.

1. Torx Screw Types & Applications

Pan head: aesthetic, for home appliances and furniture;
Countersunk head: flush installation, for equipment panels;
Cap head: high torque, for automation and robotics;
Security: anti-tamper, for EV chargers and public facilities.

2. Material Comparison

Carbon steel: low cost, high strength for indoor use;
304 stainless steel: good corrosion resistance for general use;
316 stainless steel: superior salt spray resistance for coastal and medical use.

3. Surface Finish Selection

Black oxide: low cost for dry indoor;
Zinc plating: basic corrosion protection for general indoor;
Dacromet: high salt spray resistance for coastal and outdoor.

4. Practical Selection Tips

Use cap head + grade10.9/12.9 for high torque;
304/316 + Dacromet for outdoor/coastal;
Security Torx for anti-tamper applications;
Precision Torx for M1–M3 micro devices.