Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
M16x2, #6-40, M10 x 1.50, M2x0.4, M1.6x0.35
1 7/8", 25 mm, 18 mm, 45 mm, 5/16"
Brass, Steel, Alloy Steel, Steel, Nylon, Plastic, Titanium
Flat, Ultra-Low-Profile Standard, Button, Flanged Standard, Flanged Button
Cross, Hex Socket, Socket, External Square, Slotted