Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
#6-40, M6, M10 x 1.50, 3/8"-24, M2x0.4
5 1/4", 50 mm, 2 1/2", 20 mm, 18 mm
Steel, Alloy Steel, Brass, Steel, Nylon, Plastic, Titanium
Button, Flat, Ultra-Low-Profile Standard, Standard, Flanged Button
Pozidriv, Hex, Socket, External Square, Slotted