A307 Grade A Carriage Bolts

A307 Grade A carriage bolts are made with low or medium carbon steel and offered in plain, zinc or hot dipped galvanized finishes. 

Carriage Bolt Resources

• Round Head, Square Neck Carriage Bolts
• Round Head, Short Neck Carriage Bolts
• Round Head, Ribbed Neck Carriage Bolts
• Fin Neck Carriage Bolts
• Flat Head, Square Neck Carriage Bolts
• Nut Compatibility Chart
• Bolt Grade Markings & Bolt Strength Chart