Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
M6x1, M2.5x0.45, M16x2, #8-36, M10 x 1.50
5 1/4", 3 3/4", 3/4", 1", 22 mm
Brass, Steel, Alloy Steel, Steel, Titanium, Nylon, Plastic
Standard, Flat, Low-Profile Standard, Ultra-Low-Profile Standard, Flanged Button
Cross, Phillips, Socket, Slotted, External Square