Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
5/8"-11, 1/2"-13, M2x0.4, M16x2, #2-56
5 1/4", 2 1/8", 1 3/8", 1 7/8", 18 mm
Brass, Steel, Steel, Alloy Steel, Nylon, Plastic, Titanium
Flanged Standard, Low-Profile Standard, Flat, Ultra-Low-Profile Standard, Flanged Button
Hex Socket, Hex, Socket, External Square, Slotted