Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
M4x0.7, 1/2"-13, M12x1.75, M16x2, M10 x 1.50
5 1/4", 2 1/16", 50 mm, 2 7/8", 130 mm
Steel, Alloy Steel, Brass, Steel, Nylon, Plastic, Titanium
Low-Profile Standard, Ultra-Low-Profile Standard, Standard, Flanged Standard, Flanged Button
Phillips, Hex, Socket, Slotted, External Square