Countersunk, Machine, Grub Screw, Self Drilling Screws, Flat Head Screw
Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
1/4"-20, #4-40, #6-32, M10 x 1.50, M2.5x0.45
5 1/2", 5 1/4", 3 3/4", 4 7/16", 22 mm
Brass, Nylon, Plastic, Titanium, Steel, Alloy Steel, Stainless Steel
Flanged Button, Standard, Flat, Flanged Standard, Ultra-Low-Profile Standard
Hex, Phillips, Slotted, External Square, Socket