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