Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
M20x2.5, 5/16"-18, M10 x 1.50, M1.6x0.35, M2x0.4
5 1/4", 2 1/8", 1 7/8", 80 mm, 18 mm
Stainless Steel, Steel, Alloy Steel, Steel, Titanium, Nylon, Plastic
Flat, Ultra-Low-Profile Standard, Button, Flanged Standard, Flanged Button
Torx, Hex, Socket, Slotted, External Square