Internal Hex, Internal Torx, External Hex, TX, Hex
AF, Imperial, Torx, Metric, SAE
9/32 ", 5/8 ", 7/8 ", 11/16 ", 35 mm
1-1/2, 3/4, 1/2, 2-1/2, 3/8
38.1, 25.4, 6.35, 9.53, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide