After installation

fit and elongation

3/8 x 2 1/2 Dowel Pin 18-8 (A2) Stainless Steel

1 1/8-7 x 4 1/2 A307A Hex Bolt Hot Dipped Galvanized

5/16-18 x 1 1/8 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) Finished Hex Nuts 316 Stainless Steel After installation5 16 18 x 1 1 8 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) . 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