Grade 8 Zinc Yellow Plated Carriage Bolts 5/8-11 X 3-1/2 are high-strength fasteners designed for durable timber and structural connections. The Grade 8 steel offers superior load-bearing capability, while the zinc yellow plating provides corrosion resistance for indoor and outdoor use.

These carriage bolts feature a domed head and a square neck that seats into wood to prevent turning during installation, making them ideal for deck construction, fencing, and other woodworking projects that require a secure, flush finish.

Specifications

• Diameter: 5/8 inch
• Thread: 11 TPI UNC
• Length: 3-1/2 inches
• Material/Grade: Grade 8 steel
• Finish: Zinc yellow plated
• Head type: Carriage bolt with domed head and square neck

Ideal for timber-to-timber connections in decks, fences, pergolas, and other wooden structures. Use these bolts when you need a strong, corrosion-resistant fastener that resists rotation for a clean, secure fit.