6-18 x 1 5/8 Phillips Bugle Head Hi Low Drywall Screw Black Phosphate NF9C These 3/8"-16 Serrated Flange Hex

These 3/8"-16 Serrated Flange Hex Lock Nuts are made of Grade 5 steel and feature a zinc yellow finish for corrosion resistance

these screws are ideal for drywall installation in residential

These screws are perfect for use in both indoor and outdoor applications

Ideal for use in heavy machinery

Ideal for use in pressure-treated lumber

6-18 x 1 5/8 Phillips Bugle Head Hi Low Drywall Screw Black Phosphate NF9C These 3/8"-16 Serrated Flange HexThese 6 18 x 1 5 8 Phillips Bugle Head Hi Low Drywall Screws in Black Phosphate are designed for fast and easy installation of drywall to wood or metal studs. The sharp point and aggressive threads provide superior penetration and holding power, while the bugle head design countersinks the screw head below the drywall surface for a clean, professional finish. The black phosphate coating provides corrosion resistance and a durable, long lasting hold.