Internal Hex, Internal Torx, External Hex, TX, Hex
Metric, Torx, Imperial, AF, SAE
11/16 ", 9/16 ", 3/16 ", 29 mm, 1-1/2 "
1-1/2, 3/4, 1, 3/8, 2-1/2
38.1, 12.5, 25.4, 19.05, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide