External Hex, Internal Torx, TX, Hex, 6-Point
Imperial, AF, Metric, Torx, SAE
14 mm, 9/32 ", 7/16 ", 3/16 ", 1-1/2 "
1-1/2, 1/2, 2-1/2, 1/4, 3/8
38.1, 25.4, 19.05, 6.35, 9.53
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Oxide, Black Phosphate