Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
#6-40, M6, M10 x 1.50, M1.6x0.35, M4x0.7
7 1/2", 1 7/8", 1 3/8", 18 mm, 85 mm
Steel, Brass, Stainless Steel, Titanium, Nylon, Plastic
Flat, Ultra-Low-Profile Standard, Button, Flanged Standard, Flanged Button
Phillips, Pozidriv, External Square, Slotted, Socket