1/2-20 x 4 Grade 5 Hex Cap Screw Plain Domestic USA (150)

5/16-18 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50)

3/8-16 x 5 Phillips Flat Machine Screw Type F Zinc Plated

7/8-9 x 3 Grade 8 Hex Cap Screw Yellow Zinc Plated

1/4-28 x 3 Grade 8 Hex Cap Screw Plain Domestic USA (750)

5/16-18 x 3 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (400) Lipped Drop-In Anchors Zinc Plated 1/2-20 x 4 Grade 55 16 18 x 3 3 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (400) . 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