No pre-drilling required

The zinc body consists of a die cast zinc alloy

Maximum: 2

3/4-10 x 4 Socket Cap Screw 18-8 (A2) Stainless Steel

8-32 x 1/2 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (10,000) fully-threaded No pre-drilling required8 32 x 1 2 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.