8 x 2 1/2 Square Bugle Decking Screws Yellow Zinc Plated - Carton (2500)

13/32 x 12 High Speed Aircraft Bit Cobalt

brick and plaster requires a pre-drilled 3/16” ANSI hole

7/16 x 12 High Speed Aircraft Bit Cobalt

1 1/2 x 6 Reduced Shank Drill Bit (1/2 Shank)

1/4-20 x 1 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (3,000) Tie Wire Split Drive Anchors Zinc Plated 8 x 2 1/2 Square1 4 20 x 1 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (3,000) . 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.