Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
M12x1.75, M20x2.5, M16x2, M2.5x0.45, M4x0.7
40 mm, 20 mm, 2 7/8", 18 mm, 120 mm
Brass, Steel, Stainless Steel, Titanium, Nylon, Plastic
Ultra-Low-Profile Standard, Button, Flat, Flanged Standard, Flanged Button
Hex Socket, Hex, Phillips, External Square, Slotted