18% chromium and 8% nickel for good corrosion resistance

5/8-11 x 2 1/2 Hex Cap Screw SS 316 (A4)

3/4-10 x 12 A307 Grade A Carriage Bolt Zinc Plated

1-8 x 10 Grade 5 Hex Cap Screw Zinc Plated

3/4-10 x 24 A307 Grade A Carriage Bolt Hot Dipped Galvanized 3/4-10 Hex Cap Screws 18-8 Stainless Steel 18% chromium and 8% nickel3 4 10 x 24 A307 Grade A Carriage Bolt HDG . A307 Grade A Carriage Bolts are manufactured from low carbon steel to meet or exceed ASTM A307 Grade A. Material is manufactured with rolled threads. Lengths out to 6 inches will be fully threaded. Lengths over 6 to 12 inches will have 6 inches of thread. Zinc plated material will meet or exceed ASTM F1941. Hot Dip Galvanized material will meet or exceed ASTM A153. Typical hardness will range from HRB 69