Machine, Self Drilling Screws, Socket Screw, Flat Head Screw, External Hex
Imperial, Metric, Fine, Metric, Coarse, Metric, Inch
1/2"-13, 1/2 in, 3/8"-16, 3/8 in, 3/8 in, 3/8"-24, 1/4"-20, 1/4 in, 1/4 in, 1/4"-28
5 1/2", 5 1/4", 2 1/4", 1 1/2", 160 mm
Aluminum, Brass, Titanium, Steel, Alloy Steel, Nylon, Plastic
Flanged Standard, Ultra-Low-Profile Standard, Standard, Flanged Button, Flat
Phillips, Pozidriv, Socket, Slotted, External Square