Imperial, Metric, Metric, Fine, Metric, Coarse, Inch
M1.6x0.35, M4x0.7, 1/2"-13, M20x2.5, #6-40
60 mm, 2", 3 7/8", 18 mm, 2 7/8"
Steel, Alloy Steel, Brass, Steel, Nylon, Plastic, Titanium
Ultra-Low-Profile Standard, Standard, Low-Profile Standard, Flat, Flanged Button
Torx, Hex, Socket, Slotted, External Square