Internal Torx, External Hex, TX, Hex, 6-Point
Imperial, Torx, AF, SAE, Metric
7/32 ", 9/32 ", 8 mm, 11/16 ", 3/16 "
1/4, 3/4, 1-1/2, 3/8, 2-1/2
6.35, 9.53, 12.5, 38.1, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate