9/16-18 x 1 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25)

8-32 x 1/2 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (10

9 x 3 1/2 Simpson Trim-Head Wood Decking Screws - Square Drive 305 SS - Bulk Pail (1500)

Grade A Heavy Hex Nuts are manufactured from low carbon steel

9/16-12 x 2 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) Finished Hex Nuts 18-8 Stainless Steel 9/16-18 x 1 1/4 Grade9 16 12 x 2 1 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) . Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum