Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
M20x2.5, M4, #6-40, M10 x 1.50, M1.6x0.35
5 1/4", 3 3/4", 2", 3 9/16", 3 7/8"
Stainless Steel, Steel, Alloy Steel, Steel, Nylon, Plastic, Titanium
Flat, Button, Ultra-Low-Profile Standard, Standard, Flanged Button
Pozidriv, Phillips, Socket, External Square, Slotted