Hillman 5/16 in. x 3-1/2 in. Hot Dipped Galvanized Steel Carriage Bolts, 50-Pack
SKU: 48397738232

Hillman 5/16 in. x 3-1/2 in. Hot Dipped Galvanized Steel Carriage Bolts, 50-Pack

Sale price$33.29 Regular price$36.99
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Description

Hillman 5/16 in. x 3-1/2 in. Hot Dipped Galvanized Steel Carriage Bolts, 50-Pack5 16 in. x 3 1 2 in. Galvanized Carriage Bolts (50 Pack) These Hillman carriage bolts feature a hot dipped galvanized steel finish for superior rust resistance in outdoor and marine applications. The round head and square neck provide secure, flush fastening in wood to wood or wood to metal projects. Pack includes 50 coarse thread bolts for reliable, long lasting hardware installs. Key Features: Corrosion Protection: Hot dipped galvanized steel

5/16 in. x 3-1/2 in. Galvanized Carriage Bolts (50-Pack)

These Hillman carriage bolts feature a hot-dipped galvanized steel finish for superior rust resistance in outdoor and marine applications. The round head and square neck provide secure, flush fastening in wood-to-wood or wood-to-metal projects. Pack includes 50 coarse-thread bolts for reliable, long-lasting hardware installs.


Key Features:

  • Corrosion Protection: Hot-dipped galvanized steel resists rust for outdoor longevity
  • Secure Hold: Square neck locks into wood to prevent spinning during tightening
  • Clean Finish: Low-profile round head eliminates the need for a washer and sits semi-flush
  • Reliable Strength: Grade 2 steel with coarse SAE threads for general construction use
  • Bulk Convenience: 50-piece boxed pack for multi-project efficiency

Specifications Table:

Specification Details
Size 5/16 inch diameter x 3-1/2 inch length
Finish Hot Dipped Galvanized
Material Steel
Grade 2
Thread Type Coarse
Unit of Measurement SAE
Head Style Round head with square neck
Number in Package 50 pack
Packaging Type Boxed
Category Carriage Bolts

Frequently Asked Questions (FAQ):

Q: What materials are these carriage bolts made from?
A: Steel with a hot-dipped galvanized finish for enhanced corrosion resistance.


Q: Are these bolts suitable for outdoor use?
A: Yes. The galvanized coating is designed to prevent rust, making them ideal for exterior applications.


Q: What thread type do they use?
A: Coarse SAE threads.


Q: Do I need a washer under the head?
A: Typically no—the round head design provides a semi-flush finish, reducing the need for a washer.


Q: How many bolts come in the package?
A: 50 bolts per boxed pack.


Understated Hardware, Elevated Craft

The rounded carriage head offers a clean, tailored detail that feels both intentional and timeless. Its galvanized sheen brings a subtle industrial edge while promising performance in the elements. Use these bolts to anchor outdoor benches or garden gates, letting the minimal profile complement warm woods and crisp lines. A quiet essential that ensures durability without compromising style—true luxury in the details.


Secure your projects with long-lasting, rust-resistant fastening—add this 50-pack of Hillman galvanized carriage bolts to your cart today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 48397738232

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Audrey Diane Salyers
San Leandro, US
★★★★★ 5
Awesome Ball
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
This ball is so awesome my dog can't chew it all..and was not expensive
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
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Jason Brown
Port Orchard, US
★★★★★ 1
A total joke.
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
I was so hopeful and really wanted this to be as good as the sellers claimed. After all, they boast of a lifetime replacement (a joke and be sure to read the ridiculous terms lol). I have a "pocket pitty" and she loves rubber toys. There is not much I have found that can withstand her force; however, reading reviews AND seeing their warranty, I wanted to give it a try. Typically, I stick with Java wood and XL super dense knotted ropes, as that has been the only thing that can last any real amount of time. Thankfully, she never goes after our stuff or household items/furniture, just her toys. The ball arrived. I checked it over. It looked semi promising. I was hopeful. The design does allow for them to leverage their paw strength by getting it between the rubber bars and then pull with their teeth. Within 3 minutes of her having it, she already had a bar ripped off. Within 5 minutes, she had 3 bars ripped off. Don't get me wrong, she had a blast. But this is by no means strong enough for an actual aggressive chewer. Perhaps there is just not anything rubber that can handle her jaws, but now I can't get a replacement because the warranty only covers if the product is defective. It doesn't cover chewing damage (on any of their products). The advertising is very misleading so be aware. Why a replacement if she will just destroy it again you may wonder? She loves to go after a ball, but now I know she can kill this one, I keep them in a drawer and only let her play fetch with it while supervised. I will say though, I you have a puppy, I think this would be great for them as long as they are not extra large. The material has give, which is nice. But if you have a real aggressive chewer, don't waste the money.
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Reviewed in the United States on March 7, 2023
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Verified Purchase
TERESA
West Palm Beach, US
★★★★★ 4
Not indestructible, but is very tough.
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
My dog destroyed this, but it took a little longer than it usually does. Would love to know how the lifetime replacement works. There is no information that I see on how to contact the seller.
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Reviewed in the United States on December 8, 2025
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Diane Knickerbocker
Phoenix, US
★★★★★ 5
Would buy again
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
This is a great ball! Both my dogs love it. Queensland is a heavy chewer and I can see no damage. Catahoula loves to fetch and kick after kick and retrieval this ball shows no wear. It’s easy to pick up and is a good size for my dogs.
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Reviewed in the United States on December 11, 2025
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Laura Hein
Fort Morgan, US
★★★★★ 5
Very Durable Ball
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
This ball has held up to regular puppy chewing for 3 months now. At first I was worried my retriever would get her mouth stuck in it, but it hasn't been a problem since she has gotten bigger. Supervision required for smaller pups. One thing to note is that the ball was shipped with a strong rubber smell, but that has gone away with use and washing. Super easy to clean! It is a heavier ball making it bounce well and it doesn't damage the walls. Super durable. She's been chewing on it every day and there is no damage to it at all. The scratches, holes, or pieces missing. It's stayed intact for months!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 6, 2023

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