Internal Torx, Internal Hex, External Hex, TX, Hex
Torx, AF, Imperial, SAE, Metric
15/16 ", 7/16 ", 5/16 ", 23 mm, 1-1/2 "
1-1/2, 3/4, 1, 2-1/2, 1/2
9.53, 25.4, 38.1, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide