Product: A307 Grade A Steel Hot Dipped Galvanized Coarse Carriage Bolts 5/8-11 x 13. Designed for strength, durability, and reliability in wood-to-wood connections, these carriage bolts are a smart choice for outdoor and moisture-prone applications.

Overview A307 Grade A steel with a hot-dipped galvanized finish delivers long-lasting corrosion resistance, even in harsh environments. The coarse thread allows quick, secure assembly in softwood and hardwood alike, while the domed carriage bolt head and square neck prevent movement and spinning during installation.

Key Features

• Material: A307 Grade A steel for dependable strength and structural integrity.
• Finish: Hot-dipped galvanized coating for superior corrosion resistance in exterior settings.
• Head & Neck: Domed carriage bolt head with a square neck to resist turning and ensure a flush seating in wood; requires a nut for full assembly.
• Size: 5/8-11 x 13 (5/8 inch diameter, 11 threads per inch, 13 inch length).
• Standard: Meets ASTM A307 Grade A requirements for quality and performance.

Applications

Ideal for outdoor decks, fencing, timber framing, pergolas, and other wood-to-wood connections where both strength and corrosion resistance are essential. Suitable for DIY projects and professional installations alike.

Installation Tips

• Use with matching hex nuts and, if needed, washers to distribute load.
• Pre-drill pilot holes to prevent splitting, especially in hardwoods.
• Maintain galvanized coating integrity by avoiding damage during handling and installation.

Care & Maintenance

Store bolts in a dry environment and inspect coatings periodically in outdoor applications. Replace any bolt showing signs of coating wear or corrosion to maintain performance.