Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
M20x2.5, 5/8"-11, M2.5x0.45, #6-40, M10 x 1.50
2 1/8", 1 7/8", 2 13/16", 130 mm, 100 mm
Brass, Steel, Steel, Alloy Steel, Nylon, Plastic, Titanium
Low-Profile Standard, Ultra-Low-Profile Standard, Standard, Flanged Standard, Flanged Button
Hex Socket, Torx, Socket, Slotted, External Square