Internal Hex, Internal Torx, External Hex, TX, Hex
Torx, Imperial, AF, Metric, SAE
7/8 ", 8 mm, 16 mm, 11/16 ", 9 mm
1, 1-1/2, 1/2, 2-1/2, 3/8
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