Rockwell C25-C34

(BBS™) 1/4-20 Toggler SNAPTOGGLE® Heavy Duty Toggle Bolt 304 Stainless Steel (100)

1 3/8-12 x 5 1/2 Socket Cap Screw Alloy

21/64 Heavy Duty Jobber Drill Bit

12-24 x 1/2 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (7,000) Phillips Flat Undercut Machine Screws Black Zinc Plated Rockwell C25-C3412 24 x 1 2 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (7,000) . 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.