Internal Hex, Internal Torx, External Hex, Hex, TX
Imperial, AF, Torx, SAE, Metric
5/16 ", 9/16 ", 25 mm, 1-1/2 ", 10 mm
1-1/2, 1, 3/4, 1/4, 2-1/2
6.35, 19.05, 38.1, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate