coarse thread similar to Swaneze™ screws

Grade 5 Carriage Bolts are manufactured from medium carbon steel

Typical hardness on diameters of 1/4 to 1 inch is HRC 25-34

5/16-18 x 4 Grade 5 Hex Cap Screw Plain Domestic USA (50)

7/16-20 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25)

5/8-11 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) 5/8 Hex Lag Screws Zinc Plated coarse thread similar to Swaneze™5 8 11 x 1 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) . 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