A307 Grade A Carriage Bolts are manufactured from low carbon steel to meet or exceed ASTM A307 Grade A

3/4 x 6 Hex Lag Screw Zinc Plated

3/4-10 x 9 Grade 5 Hex Cap Screw Zinc Plated

18-8 stainless steel hex tap bolts will have a typical composition of 18% chromium and 8% nickel

5/8 x 9 Hex Lag Screw Zinc Plated 7/16-14 Hex Tap Bolts 18-8 Stainless Steel A307 Grade A Carriage Bolts5 8 x 9 Hex Lag Screw Zinc Plated . Hex Lag Screws are manufactured from low carbon steel to meet SAE J429 Grade 1. Lag screws longer than 12 inches will have a minimum thread length of 50% of the screw length up to a maximum of 8 inches. Zinc plated material will meet or exceed ASTM F1941. Hot Dip Galvanized material will meet or exceed ASTM A153. Typical hardness is HRB 70 100. Tensile strength (not pull out) will meet a minimum of 60,000 psi.