Internal Torx, Internal Hex, External Hex, TX, Hex
Imperial, Torx, AF, SAE, Metric
9/16 ", 3/16 ", 7 mm, 5/16 ", 5/8 "
1/2, 3/4, 1-1/2, 2-1/2, 3/8
9.53, 6.35, 12.5, 38.1, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide