Socket Screw, Machine, Self Drilling Screws, Flat Head Screw, External Hex
Imperial, Metric, Fine, Metric, Coarse, Inch, Metric
5/16"-18, 5/16 in, 1/4 in, 1/4"-28, 5/8"-11, 5/8 in, 3/8"-16, 3/8 in, M4, M4-0.70
5 1/4", 2 1/16", 70 mm, 2 1/8", 130 mm
Steel, Alloy Steel, Steel, PEEK, Plastic, Nylon, Plastic, Titanium
Low-Profile Standard, Ultra-Low-Profile Standard, Standard, Flanged Standard, Flat
Hex Socket, Phillips, Socket, Slotted, External Square