Imperial, Metric, Coarse, Metric, Fine, Inch, Metric
M2x0.4, M2.5x0.45, #8-36, 1/2"-13, M10 x 1.50
1 9/16", 2 1/4", 80 mm, 3 7/8", 5/16"
Brass, Steel, Alloy Steel, Steel, Titanium, Nylon, Plastic
Flat, Low-Profile Standard, Ultra-Low-Profile Standard, Standard, Flanged Button
Phillips, Torx, External Square, Socket, Slotted