SKU: 26543458566

Hillman 5/16 in. x 3 in. Hot-Dipped Galvanized Steel Carriage Bolts, 100-Pack

Sale price$52.19 Regular price$57.99
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Description

Hillman 5/16 in. x 3 in. Hot-Dipped Galvanized Steel Carriage Bolts, 100-Pack5 16 in. x 3 in. Galvanized Carriage Bolts (100 Pack) Durable Hillman carriage bolts made from steel with a hot dipped galvanized finish for superior rust resistance. Ideal for fastening wood to wood or wood to metal, the round head and square neck provide a clean, semi flush finish and self locking grip. Key Features: Corrosion Protection: Hot dipped galvanized finish resists rust for outdoor and coastal applications Secure Hold: Square neck locks

5/16 in. x 3 in. Galvanized Carriage Bolts (100-Pack)

Durable Hillman carriage bolts made from steel with a hot-dipped galvanized finish for superior rust resistance. Ideal for fastening wood to wood or wood to metal, the round head and square neck provide a clean, semi-flush finish and self-locking grip.


Key Features:

  • Corrosion Protection: Hot-dipped galvanized finish resists rust for outdoor and coastal applications
  • Secure Hold: Square neck locks into wood to prevent spinning during tightening
  • Clean Finish: Low-profile round head eliminates need for a washer in many installs
  • Reliable Strength: Grade 2 steel with coarse threads for dependable fastening
  • Bulk Value: 100-count boxed pack for jobsite and shop efficiency

Specifications Table:

Specification Details
Diameter 5/16 inch
Length 3 inch
Material Steel
Finish Hot Dipped Galvanized
Grade 2
Thread Type Coarse
Unit of Measurement SAE
Number in Package 100 pack
Packaging Type Boxed
Head Style Round head carriage bolt
Neck Style Square neck, self-locking
Category Carriage Bolts

Frequently Asked Questions (FAQ):

Q: What size are these carriage bolts?
A: They are 5/16 inch diameter and 3 inches in length with coarse threads.


Q: What materials are these suitable for?
A: They’re designed to fasten a wooden face to either a wood or metal frame.


Q: Are they rust resistant for outdoor use?
A: Yes, the hot-dipped galvanized finish offers strong corrosion protection for exterior applications.


Q: Do I need a washer under the head?
A: Typically no—the round head is designed to provide a semi-flush finish without a washer.


Q: How many bolts are in the package?
A: 100 bolts come in a boxed retail pack.


Understated Hardware, Elevated Finish

The soft dome head and muted galvanized sheen bring a quiet sophistication to exposed hardware moments. I love the square-neck detail—it nests into wood for a tailored, seamless look. Use these to secure bench slats or deck accents where the hardware becomes part of the design story. A dependable, polished touch for luxe, lived-in spaces.


Choose Hillman galvanized carriage bolts for a clean, secure install that stands up to the elements—order your 100-pack 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: 26543458566

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TNSS
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Reviewed in the United States on November 6, 2025
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Belleville, US
★★★★★ 5
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OMGosh, this feels so good on your lips! I just got this today so I’ll have to update if the moisture doesn’t last. But so far it feels nice. I did have a slight issue with it melting onto itself in the one day it took to get to me. See photos. The tube itself was slightly concave because of the melting. But is still intact. So far though I love this stuff!
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★★★★★ 5
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Small Town Girl
Charlottesville, US
★★★★★ 4
Worth a try, I guess.
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Reviewed in the United States on May 26, 2026
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