Internal Hex, Internal Torx, External Hex, Hex, TX
Imperial, Metric, Torx, AF, SAE
11/32 ", 9/16 ", 7/32 ", 5/8 ", 11/16 "
1-1/2, 3/8, 1, 2-1/2, 1/2
6.35, 19.05, 12.5, 38.1, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphatized, Oxidised, Black Phosphate, Black Oxide