Internal Hex, External Hex, TX, Hex, External Torx
AF, Imperial, Torx, SAE, Metric
11 mm, 7/16 ", 5/8 ", 11/16 ", 1-1/2 "
1/2, 1, 1-1/2, 2-1/2, 3/8
38.1, 9.53, 6.35, 12.5, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide