1/4-20 x 5/8 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (3000)

7/16-14 x 4 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (175)

3/8-16 x 2 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (450)

Heavy duty construction made to Type J aircraft specifications

1-14 x 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

3/4-16 x 4 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (55) 5/16-18 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA 1/4-20 x 5/8 Grade 83 4 16 x 4 1 2 Grade 5 Hex Cap Screw Plain Domestic USA (55). 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 of