Imperial, Metric, Coarse, Metric, Fine, Metric, Inch
M2x0.4, 1/4"-20, M24x3, M20x2.5, M10 x 1.50
5 1/4", 1 1/4", 1 3/8", 55 mm, 18 mm
Stainless Steel, Steel, Alloy Steel, Steel, Nylon, Plastic, Titanium
Low-Profile Standard, Ultra-Low-Profile Standard, Standard, Flanged Button, Flat
Cross, Hex, Socket, External Square, Slotted