9/16-18 x 2 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (200)

3/8-16 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (225)

1/2-20 x 6 1/2 Hex Cap Screw SS 316 (A4)

1/4-20 x 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (3300)

#2 square drive truss head

9/16-12 x 2 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (175) Star Flat Decking Screws W.A.R. Coated 9/16-18 x 2 1/4 Grade9 16 12 x 2 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (175) . 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