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