Internal Hex, Internal Torx, External Torx, TX, Hex
Imperial, Metric, AF, Torx, SAE
9/32 ", 15/16 ", 5/16 ", 1-1/2 ", 10 mm
1/4, 2-1/2, 1-1/2, 3/4, 3/8
25.4, 12.5, 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