Internal Hex, External Torx, Internal Torx, TX, Hex
Imperial, AF, Metric, Torx, SAE
5 mm, 13 mm, 3/16 ", 36 mm, 1-1/2 "
1/2, 3/4, 1-1/2, 2-1/2, 3/8
38.1, 25.4, 9.53, 6.35, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide