sewage and atmospheric conditions

3/8-24 x 2 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100)

8 x 1 1/4 Simpson Truss-Head Wood Screws - Square Drive 305 SS - Carton (1000)

5/16-24 x 6 Grade 5 Hex Cap Screw Plain Domestic USA (250)

3/8-24 x 4 Grade 5 Hex Cap Screw Plain Domestic USA (250)

1/2-20 x 2 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (200) 9/16-18 Grade 8 Hex Cap Screws Yellow Zinc Plated sewage and atmospheric conditions1 2 20 x 2 3 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (200) . 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