Internal Torx, External Hex, TX, Hex, 6-Point
Imperial, Metric, AF, Torx, SAE
9/32 ", 5.5 mm, 7/8 ", 3/8 ", 11/16 "
1, 3/4, 2-1/2, 1-1/2, 3/8
19.05, 6.35, 25.4, 9.53, 12.5
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Gun-metal, Oxidised, Black Phosphate, Black Oxide