TX, Internal Hex, External Torx, Internal Torx, External Hex
Imperial, AF, Torx, SAE, Metric
7/32 ", 5.5 mm, 5/16 ", 11/16 ", 30 mm
1, 1-1/2, 3/8, 2-1/2, 3/4
38.1, 19.05, 6.35, 12.5, 40
Molybdenum Steel, Special Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Phosphatized, Phosphated, Gun-metal, Black Phosphate, Black Oxide