Internal Hex, Internal Torx, Hex, TX, 6-Point
Metric, Imperial, AF, Torx, SAE
7 mm, 9/16 ", 29 mm, 1-1/2 ", 11/16 "
1-1/2, 3/4, 3/8, 2-1/2, 1
38.1, 6.35, 12.5, 25.4, 19.05
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide