Internal Torx, Internal Hex, External Hex, TX, Hex
AF, Imperial, Torx, Metric, SAE
9/32 ", 7/32 ", 5 mm, 5/8 ", 11/16 "
1/2, 1/4, 3/4, 1-1/2, 2-1/2
38.1, 6.35, 9.53, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide