Grade 5 Carriage Bolts are manufactured from medium carbon steel

1/4-28 x 7/8 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (2500)

18-8 stainless steel is best for applications where corrosion resistance is required

1 1/2-6 x 4 1/2 A307A Hex Bolt Zinc Plated

3/4-10 x 1 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (140)

1 1/4-7 x 5 1/2 A307A Hex Bolt Plain Steel Phillips Flat Particle Board Screws T17 Zinc Plated Grade 5 Carriage Bolts are1 1 4 7 x 5 1 2 A307A Hex Bolt Plain Steel. A307A Hex Bolts are manufactured from low carbon steel, typically 1015 1022. Our A307A bolting meets or exceeds ASTM A307 Grade A. Material is manufactured with rolled threads. Zinc plated material meets or exceeds ASTM F1941. Tensile strength will meet or exceed 60,000 psi.