Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
M20x2.5, #8-36, M10 x 1.50, M1.6x0.35, M2x0.4
5 1/4", 20 mm, 14 mm, 5/16", 3 9/16"
Brass, Steel, PEEK, Plastic, Nylon, Plastic, Titanium
Low-Profile Standard, Ultra-Low-Profile Standard, Standard, Flanged Standard, Flanged Button
Hex, Phillips, Socket, Slotted, External Square