A307 Grade A Steel hot dipped galvanized coarse carriage bolts provide superior corrosion resistance and reliable performance for outdoor and heavy-duty wood fastening. Sized at 1/2″-13 x 8″, these bolts are designed for wood-to-wood connections with a coarse 13 TPI thread for quick, strong seating.

Product highlights

• Material: A307 Grade A steel
• Finish: Hot-dipped galvanized for excellent rust protection
• Size: 1/2″ diameter, 13 threads per inch, 8″ long
• Pattern: Coarse thread for fast, secure engagement
• Design: Carriage bolts with square neck under the head for stable seating in wood
• Applications: Decks, fences, timber framing, outdoor furniture

For lasting outdoor projects, pair these bolts with compatible nuts and washers to complete your assembly with confidence.