Internal Hex, External Torx, Internal Torx, TX, Hex
Torx, Imperial, AF, SAE, Metric
12 mm, 13/16 ", 5/8 ", 3/16 ", 11/16 "
1-1/2, 1/2, 3/4, 2-1/2, 3/8
12.5, 9.53, 6.35, 19.05, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide