These screws feature a self-piercing tip for no-prep installs and a Phillips bugle head for a flush finish that protects the drywall surface
The 410 stainless steel provides the most corrosion resistance of all the self-drilling screws and is suitable for exterior applications
deck/porch railings and louvers easier and faster
2x4 studs are acceptable
Flat Countersunk Head with 6-Lobe Drive: Ensures flush installation with reliable tool engagement using a T25 driver bit
#10 x 2-3/4" Simpson Strong-Tie DCU T20 Cap Head Composite Deck Screw - 305 Stainless Steel, Red, Pkg. 1,750 SCHA Slide-Clip Connectors These screws feature a self-piercingThe Simpson Strong Tie Deck Drive DCU Composite Screw is designed for composite and PVC decking, trim, and cladding where strength, clean finishes, and durability are a must. Featuring a cap head that prevents mushrooming, these screws ensure a smooth, professional look across all major composite brands. The Quik Guardcoated 305 stainless steel offers dependable corrosion resistance for everything from residential decks to high exposure and marine