Internal Torx, Internal Hex, External Hex, TX, Hex
Metric, AF, Imperial, Torx, SAE
5/8 ", 7/8 ", 36 mm, 1-1/2 ", 9 mm
1-1/2, 3/4, 2-1/2, 3/8, 1
6.35, 38.1, 25.4, 19.05, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide