Imperial, Metric, Coarse, Metric, Fine, Inch, Metric
M2x0.4, M2.5x0.45, 5/16"-18, #6-40, 3/8"-24
1 3/8", 100 mm, 3 11/16", 2 7/8", 45 mm
Steel, Alloy Steel, Aluminum, Brass, Steel, Titanium
Button, Standard, Flat, Low-Profile Standard, Ultra-Low-Profile Standard
Phillips, Torx, Socket, Slotted, External Square