Machine, Self Drilling Screws, Socket Screw, Flat Head Screw
Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
5/16"-18, 5/16 in, 1/4 in, 1/4"-28, 3/8"-16, 3/8 in, 5/16 in, 5/16"-24, M8, M8-1.25
5 1/4", 2 1/16", 3 11/16", 60 mm, 65 mm
Steel, Titanium, Nylon, Plastic, Stainless Steel, Steel, Alloy Steel
Flanged Standard, Standard, Button, Flat, Ultra-Low-Profile Standard
Hex Socket, Socket, External Square, Slotted, External Hex