7 x 2 1/4 Simpson Trim-Head Self-Drilling Siding Screw - Square Drive 410 SS - Carton (1000)

#16 Heavy Duty Jobber Drill Bit

Holding power: Pull-out values of Marine screws exceed those of ordinary tapping screws in fiberglass and wood

10 x 3 1/2 Square Bugle Decking Screws W

1-8 x 3 3/4 Socket Cap Screw Alloy

6-32 x 5/16 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (10,000) SDS Plus eVolution Hammer Drill Bits 7 x 2 1/4 Simpson6 32 x 5 16 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (10,000) . Black Zinc is an acidic, low temperature powdered product developed to impart a black conversion coating of zinc die casting, galvanized stock and electroplated zinc parts. The black coating serves as a base for organic coatings (lacquers, paints, waxes and oils) and also provides an esthetic appeal.