Imperial, Metric, Coarse, Metric, Fine, Inch, Metric
1/2"-13, #6-32, M6, M10 x 1.50, M1.6x0.35
1 3/8", 18 mm, 25 mm, 2 1/4", 130 mm
Brass, Steel, Alloy Steel, Steel, Nylon, Plastic, Titanium
Flat, Button, Ultra-Low-Profile Standard, Standard, Flanged Button
Cross, Hex Socket, Socket, Slotted, External Square