Internal Torx, Internal Hex, External Hex, Hex, TX
Imperial, Metric, Torx, AF, SAE
9/32 ", 3/4 ", 5/8 ", 9/16 ", 5/16 "
1/4, 2-1/2, 1/2, 3/8, 3/4
6.35, 19.05, 25.4, 9.53, 38.1
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Oxide, Black Phosphate