Internal Hex, Internal Torx, External Hex, TX, Hex
AF, Imperial, Metric, Torx, SAE
7/16 ", 9/32 ", 7/8 ", 9/16 ", 3/16 "
1, 1/4, 1-1/2, 2-1/2, 1/2
19.05, 12.5, 38.1, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate