Internal Torx, External Hex, Internal Hex, TX, Hex
Imperial, AF, Torx, Metric, SAE
9/32 ", 15/16 ", 5/16 ", 11/16 ", 30 mm
1-1/2, 1/4, 2-1/2, 3/8, 1/2
9.53, 19.05, 25.4, 38.1, 6.35
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide