5/8-11 x 3 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100)

7/16-14 x 3 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50)

8-32 x 3/4 Phillips Flat Undercut Machine Screw Black Zinc Plated (10

3/8-16 x 7/8 Grade 5 Hex Cap Screw Plain Domestic USA (100)

3/4-16 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (125) 18" Long Boy Drill Bits 5/8-11 x 3 Grade 53 4 16 x 1 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (125) . 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