External Hex, Internal Hex, Internal Torx, TX, Hex
Torx, AF, Imperial, SAE, Metric
7 mm, 9/32 ", 5 mm, 5.5 mm, 5/8 "
3/4, 1-1/2, 2-1/2, 3/8, 1
25.4, 6.35, 19.05, 38.1, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide