External Hex, Internal Torx, Hex, TX, External Torx
Imperial, Metric, Torx, AF, SAE
5 mm, 7/32 ", 7/8 ", 15 mm, 30 mm
1, 1/2, 2-1/2, 1-1/2, 3/8
25.4, 38.1, 19.05, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate