Internal Hex, Internal Torx, External Torx, TX, Hex
Imperial, Metric, AF, Torx, SAE
7/32 ", 15/16 ", 13/16 ", 9/16 ", 11/16 "
3/8, 1/4, 3/4, 2-1/2, 1-1/2
38.1, 19.05, 9.53, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide