Imperial, Metric, Coarse, Metric, Fine, Metric, Inch
M20x2.5, M4x0.7, M5x0.8, M10 x 1.50, M1.6x0.35
5 1/4", 1 9/16", 3 7/8", 85 mm, 22 mm
Steel, Alloy Steel, Steel, Brass, Nylon, Plastic, Titanium
Button, Low-Profile Standard, Ultra-Low-Profile Standard, Flanged Standard, Flanged Button
Cross, Hex, External Square, Socket, Slotted