Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
M16x2, #8-36, #6-40, M6, M10 x 1.50
5 1/4", 2 1/16", 3 9/16", 22 mm, 3 11/16"
Brass, Steel, Alloy Steel, Nylon, Plastic, Titanium, Steel
Flat, Ultra-Low-Profile Standard, Button, Flanged Button, Flanged Standard
Phillips, Hex, Socket, External Square, Slotted