Socket Screw, Machine, Self Drilling Screws, Flat Head Screw
Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
5/16"-18, 5/16 in, 3/8"-16, 3/8 in, 1/2"-20, 1/2 in, 1/4"-20, 1/4 in, 5/16 in, 5/16"-24
3 7/8", 4 3/8", 3 11/16", 90 mm, 45 mm
Brass, Stainless Steel, Nylon, Plastic, Titanium, Steel, Alloy Steel
Flat, Low-Profile Standard, Ultra-Low-Profile Standard, Button, Flanged Button
Phillips, Slotted, Socket, External Square, External Hex