Self Drilling Screws, Machine, Socket Screw, Flat Head Screw, External Hex
Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
1/4 in, 1/4"-28, 5/8"-11, 5/8 in, 9/16"-12, 9/16 in, 7/8"-9, 7/8 in, 1-1/8"-7, 1-1/8 in
3 7/8", 22 mm, 55 mm, 3 11/16", 8"
Stainless Steel, Steel, Steel, Alloy Steel, Titanium, Nylon, Plastic
Flat, Low-Profile Standard, Standard, Ultra-Low-Profile Standard, Flanged Button
Hex, Phillips, Socket, Slotted, External Square