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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Rox
Lowell, US
★★★★★ 5
Great buy for rough heels
Color: Gray
These work great on hubby's feet which are always so dry. Just have to be consistent. They fit great and are comfortable he says.
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Reviewed in the United States on May 12, 2026
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jsnmckinn
West Palm Beach, US
★★★★★ 5
Works and good quality...will last
Color: 2 Pairs: Black
Worked overnight
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Reviewed in the United States on May 26, 2026
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Monique Martin
Port Orchard, US
★★★★★ 4
Works well
Color: Gray
Makes my heels super soft in addition to applying lotion
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Reviewed in the United States on March 1, 2026
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Angie P.
Fort Morgan, US
★★★★★ 5
Works well and fast
Color: Gray
I have very dry and cracked heals and this has helped a lot in just two nights . They are very soothing and comfortable to wear
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Reviewed in the United States on May 9, 2026
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Nurse Jesica
Waukegan, US
★★★★★ 5
My Heels Were in Bad Shape. Like… Really Bad
Color: Gray
These moisturizing heel socks with the gel cushions were honestly a small miracle for me. After recovering from cancer treatments, my skin became extremely dry everywhere, but my heels were the worst. They cracked so deeply they looked like fissures and were even bleeding. I tried lotions and bandages repeatedly with very little progress. A friend suggested I treat my heel like it might have a fungal component, so I applied Lotrimin cream, put these heel socks on, and hoped for the best. Within three days, my heels were fully healed. I completed a 7-day routine, and my feet have never been softer. The silicone gel cushion is comfortable, soothing, and stays in place. I loved it so much that I still treat myself about once a week, even though I really don’t need to anymore. They are also washable. I hand-washed mine in the sink and let them air dry, and they came out looking brand new. If your heels are cracked, painful, or need serious care, I highly recommend these.
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Reviewed in the United States on January 9, 2026

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