Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Imperial, Torx, Metric, SAE
9/32 ", 3/16 ", 5.5 mm, 5/8 ", 11/16 "
1-1/2, 1/4, 2-1/2, 1/2, 3/8
9.53, 6.35, 38.1, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate