1/2-13 x 9 Grade 5 Hex Cap Screw Zinc Plated

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3/8-16 x 2 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (450) Nylon Insert Locknuts Zinc Plated 1/2-13 x 9 Grade 53 8 16 x 2 1 4 Grade 5 Hex Cap Screw Plain Domestic USA (450). 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