Imperial, Metric, Coarse, Metric, Fine, Inch, Metric
M20x2.5, M4x0.7, #6-32, M10 x 1.50, M1.6x0.35
3 3/16", 2", 3 1/8", 40 mm, 20 mm
Steel, Alloy Steel, Brass, Stainless Steel, Titanium, Nylon, Plastic
Standard, Ultra-Low-Profile Standard, Flanged Standard, Flat, Flanged Button
Phillips, Hex Socket, External Square, Slotted, Socket