Newport Fasteners

A countersunk head screw with a flat top surface, a concave underhead bearing surface with spaced threads. The final 2 to 3 threads taper to an extra sharp point with a chip cavity cut out approximately 25 percent of that tapered section. Designed specifically for joining pieces of pressure treated lumber. Remains resistant to corrosion for approximately twice as long as dacrotized steel deck screws. The chip cavity assists in the driving process.