Internal Torx, Internal Hex, External Hex, TX, Hex
Torx, AF, Imperial, Metric, SAE
3/16 ", 7 mm, 7/16 ", 5/8 ", 1-1/2 "
2-1/2, 1-1/2, 1/2, 1/4, 3/4
38.1, 19.05, 25.4, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide