Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Torx, Imperial, SAE, Metric
3/16 ", 9 mm, 5/16 ", 11/16 ", 26 mm
1-1/2, 1/2, 3/4, 1/4, 3/8
19.05, 25.4, 9.53, 6.35, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide