Internal Hex, Internal Torx, External Hex, Hex, TX
Imperial, Torx, Metric, AF, SAE
7/16 ", 11/16 ", 15/16 ", 7 mm, 34 mm
1/2, 1, 3/4, 1-1/2, 2-1/2
25.4, 38.1, 19.05, 9.53, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide