Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
1"-8, 1/4"-20, M16x2, #6-32, M10 x 1.50
2 13/16", 25 mm, 18 mm, 3 11/16", 2 7/8"
Brass, Steel, Steel, Alloy Steel, Titanium, Nylon, Plastic
Low-Profile Standard, Ultra-Low-Profile Standard, Standard, Flat, Flanged Button
Phillips, Hex, Socket, External Square, Slotted