Pair it with heavy bolts for building bridges

5/16-18 x 5 Hex Tap Bolt Silicon Bronze

1 1/2-12 x 5 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (5)

Low-profile head

3/8-16 x 7 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (150) Titen HD® Heavy Duty Screw Anchors Zinc Plated Pair it with heavy bolts3 8 16 x 7 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (150) . Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on