Internal Torx, Internal Hex, External Hex, TX, Hex
Torx, Metric, AF, Imperial, SAE
11/32 ", 15 mm, 9/16 ", 5/16 ", 11/16 "
1, 1-1/2, 2-1/2, 1/2, 3/8
12.5, 19.05, 38.1, 9.53, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphated, Gun-metal, Oxidised, Black Phosphate, Black Oxide