Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
1/4"-20, M2.5x0.45, #6-40, M10 x 1.50, #8-32
4 1/8", 12", 2 9/16", 5 1/4", 3 9/16"
Aluminum, Brass, Titanium, Steel, Nylon, Plastic
Low-Profile Standard, Button, Ultra-Low-Profile Standard, Flat, Flanged Button
Hex, Phillips, Socket, External Square, Slotted