5/16 × 3-1/2 in Zinc-Plated Carriage Bolts (50-Pack)
50 per pack
$44.93 /pack
$0.90 per piece · 50 per pack
Orders start at $399. Combine any items to reach it.
Sold by the pack of 50. We round up and set the quantity for you.
- 1 pack · 50 pieces
- $44.93
- Standard delivery
- $49.99 per order
- Sales tax
- Added at checkout
All orders are subject to approval.
You're not charged until your order is approved and ready to ship. Cancel free before then.
Standard delivery$49.99
Per order, added in your cart. We deliver to the 48 contiguous states.
Availability confirmed by the desk at approval, with your delivery date. Shipping policy · Returns
Goes with
Fasteners
Details & specifications.
From the maker · the maker’s description
Durable zinc-plated steel carriage bolts for secure fastening in wood and metal projects. The rounded head and square neck prevent turning for a clean, finished look. Pack of 50 for bulk jobs and reliable performance.
A Polished, Industrial Touch with Everyday Strength
These zinc-plated carriage bolts bring a refined industrial detail to any project, marrying function with a clean, domed silhouette. The gleam of the finish adds subtle sophistication while the square neck ensures a seamless, secure set. Style them with natural woods and matte black hardware for a modern, grounded look. Essential hardware that elevates craftsmanship to a luxurious standard.
Secure your projects with Hillman’s reliable, corrosion-resistant carriage bolts—add this 50-pack to your toolkit today.
- Length
- 3-1/2 in
- Per pack
- 50 per pack
- Finish
- Zinc-plated
- Head
- Domed (carriage) head
- Material
- Steel
- Diameter
- 5/16 in
- Neck Type
- Square neck
- Product Dimensions (package)
- 8.6 x 4.3 x 3.5 in
- Package Weight
- 8.2 lb
- Brand
- Hillman
- Full product name
- Hillman 5/16 in. x 3-1/2 in. Zinc-Plated Steel Carriage Bolt, 50-Pack
Key features
- Corrosion-Resistant Finish: Zinc-plated steel resists rust for indoor/outdoor use
- Secure Hold: Square neck under domed head prevents bolt rotation during tightening
- Versatile Size: 5/16 in. diameter by 3-1/2 in. length suits a wide range of builds
- Bulk Value: 50-pack ideal for decking, fencing, and general construction
- Trusted Quality: Manufactured by Hillman for consistent performance
Specifications are provided by the manufacturer. Brand names are trademarks of their owners.
Guide
Choosing the fastener
- 1
Outdoors and treated lumber
Use hot-dip galvanized, stainless or exterior-coated fasteners, and follow the board maker’s fastener recommendation.
- 2
Price per piece
The pack price divided by the pieces in the pack, both as listed.
- 3
Drive
Star (Torx), square, Phillips or hex, as the listing states. Match the bit you carry.
Zinc-plated steel for strength and corrosion resistance.