Strength and durability meet outdoor-grade reliability with our A307 Grade A Steel Hot Dipped Galvanized Coarse Carriage Bolts, sized 5/16-18 x 6 1/2. Engineered for wood-to-wood connections, these carriage bolts resist corrosion and provide a secure, flush finish.

Key features

• Material and finish: A307 Grade A steel with a hot-dipped galvanized coating for exceptional corrosion resistance in outdoor and damp environments.
• Size and thread: 5/16-18 coarse thread for fast assembly and strong holding power.
• Length: 6 1/2 inches overall length, suitable for thicker wood components.
• Head and drive: Carriage bolts feature a rounded head with a square neck beneath for secure fitment in wooden members.
• Applications: Ideal for decks, fences, timber framing, and other outdoor wood projects requiring robust wood-to-wood connections.

Technical specifications

• Diameter: 5/16 in
• Thread: 18 per inch
• Material: A307 Grade A steel
• Finish: Hot-dip galvanized
• Length: 6-1/2 in (overall)

Upgrade your hardware with these dependable carriage bolts that blend strength, corrosion resistance, and easy installation for long-lasting outdoor fixtures.