Internal Hex, Internal Torx, External Hex, TX, Hex
Metric, Torx, Imperial, AF, SAE
9/32 ", 5.5 mm, 7/16 ", 8 mm, 13/16 "
1, 1/4, 1-1/2, 2-1/2, 3/8
38.1, 6.35, 9.53, 19.05, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide