Internal Torx, External Hex, Hex, TX, 6-Point
Imperial, Metric, Torx, AF, SAE
3/8 ", 5/16 ", 7/16 ", 1-1/2 ", 11/16 "
1/4, 1-1/2, 3/4, 2-1/2, 1
38.1, 12.5, 19.05, 6.35, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide