Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
M20x2.5, M6, 3/8"-24, M10 x 1.50, M1.6x0.35
5 1/4", 3 9/16", 2 1/8", 22 mm, 18 mm
Brass, Stainless Steel, Steel, Nylon, Plastic, Titanium
Standard, Low-Profile Standard, Button, Ultra-Low-Profile Standard, Flanged Button
Hex Socket, Hex, Socket, External Square, Slotted