#4 x 3/16 Round Head Type U Drive Screw 316 Stainless Steel - Pkg of 10000

#14A x 1-1/4" One-Way Sheet Metal Screw - Round Head - 18-8 Stainless Steel - Pkg of 100 Security fasteners provide an added level of security by their drive design that prevents removal with ordinary screw drivers. Popular design installs with standard screwdriver. Reverse side cammed out to prevent unauthorized removal.

Self drilling screws have a point to cut through material and eliminate the need to drill a pilot hole. Indented hex washer head offers advantages of hex head, plus greater protection to mating surface.

6X2 Bugle Square Drive Course Thread Type 17 Point Deck Screw 18 8 Stainless Steel. Type-17 used in decking materials including woods with medium density and composite materials. Bugle head screws are commonly used for drywall because it distributes bearing stress over a wider area than a flat head.

10X3 Bugle Square Drive Course Thread Type 17 Point Deck Screw 18 8 Stainless Steel. Type-17 used in decking materials including woods with medium density and composite materials. Bugle head screws are commonly used for drywall because it distributes bearing stress over a wider area than a flat head.

10X1/2 Round Head Type U Drive Screw Zinc Bake. Drive screw Type-U fasteners permanently fasten metals and plastics, when forced into the work piece using pressure. Round head screws are sometimes perferred over a pan head for its smooth surface and appearance.