External Hex, Internal Hex, Internal Torx, Hex, TX
Torx, AF, Imperial, SAE, Metric
9/32 ", 7/16 ", 13/16 ", 5/8 ", 11/16 "
1-1/2, 1/4, 2-1/2, 1/2, 3/8
6.35, 38.1, 19.05, 25.4, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Oxide, Black Phosphate