Stainless Steel 5/16 in. x 4 in. Carriage Bolts (25-Pack)

Durable Hillman stainless steel carriage bolts deliver a clean, semi-flush finish and superior corrosion resistance for outdoor and structural wood-to-wood or wood-to-metal projects. The domed head and square shoulder lock into place for secure fastening without a washer.

Key Features:

• Corrosion-Resistant Stainless Steel: Ideal for outdoor and coastal applications
• Semi-Flush Domed Head: Provides a smooth, finished look
• Self-Locking Square Shoulder: Helps prevent spinning during installation
• Coarse Thread SAE: Strong grip for common construction uses
• 25-Pack Convenience: Boxed for easy storage and bulk projects

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What materials can these carriage bolts fasten?
A: They are designed for fastening a wooden face to wood or metal frames.

Q: Do I need a washer with these bolts?
A: The flat, domed head is designed to provide a semi-flush finish without a washer.

Q: Are they suitable for outdoor use?
A: Yes. The stainless steel material offers superior protection against rust and corrosion.

Q: What is the thread type?
A: Coarse thread, SAE measurement.

Q: What size are these bolts?
A: 5/16-inch diameter by 4-inch length, packaged 25 per box.

Sleek Hardware with Lasting Strength

These stainless steel carriage bolts bring a refined, architectural polish to exposed timber or custom built-ins. The smooth domed head is a subtle design note that reads clean and intentional, while the square shoulder locks into place for a crisp finish. Use them to accent outdoor pergolas or statement shelving where hardware becomes part of the aesthetic. A small detail that signals quality—and elevates everyday spaces to luxe living.

Secure your next build with stainless steel reliability—add this 25-pack of Hillman carriage bolts to your project today.