5/16-18 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50)

9/16-18 x 2 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (25)

6-20 x 1 1/2 Phillips Pan Face Framing Screw T17 Black Oxide - Carton (7

5/16-24 x 3 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (500)

1/2-13 x 10 Grade 5 Hex Cap Screw Zinc Plated

5/16-24 x 2 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) M20-2.50 Socket Set Screws Cup Point DIN 916 Black Oxide 5/16-18 x 4 1/2 Grade5 16 24 x 2 3 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) . 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