5/8-18 x 2 Grade 5 Hex Cap Screw Plain Domestic USA (25)

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Hardness of RC 38-43

3/4-10 x 5 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (20)

3/4-16 x 5 Grade 5 Hex Cap Screw Plain Domestic USA (45) 7/8-9 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA 5/8-18 x 2 Grade 53 4 16 x 5 Grade 5 Hex Cap Screw Plain Domestic USA (45). 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 120,000