SKU: 37905600797

Hillman 3/8 in. x 3-1/2 in. Hot-Dipped Galvanized Steel Carriage Bolts, 50-Pack

Sale price$44.09 Regular price$48.99
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Description

Hillman 3/8 in. x 3-1/2 in. Hot-Dipped Galvanized Steel Carriage Bolts, 50-PackHillman Galvanized 3 8" x 3 1 2" Carriage Bolts (50 Pack) Durable hot dipped galvanized steel carriage bolts for fastening wood to wood or metal with a clean, low profile finish. The square shoulder locks into material for secure, washer free installation and coarse threads ensure reliable grip in outdoor or high moisture environments. Key Features: Rust Resistant Protection: Hot dipped galvanized finish delivers superior corrosion resistance for

Hillman Galvanized 3/8" x 3-1/2" Carriage Bolts (50-Pack)

Durable hot-dipped galvanized steel carriage bolts for fastening wood to wood or metal with a clean, low-profile finish. The square shoulder locks into material for secure, washer-free installation and coarse threads ensure reliable grip in outdoor or high-moisture environments.


Key Features:

  • Rust-Resistant Protection: Hot-dipped galvanized finish delivers superior corrosion resistance for exterior use
  • Secure Hold: Square shoulder locks into wood for anti-rotation and eliminates the need for a flat washer
  • Clean, Low-Profile Finish: Smooth domed head sits semi-flush where space is tight
  • Reliable Threading: Coarse SAE threads provide strong engagement in wood and metal
  • Sized for Versatility: 3/8 in. diameter x 3-1/2 in. length, 50 bolts per boxed pack

Specifications Table:

Specification Details
Brand Hillman
Finish Hot Dipped Galvanized
Material Steel
Diameter 3/8 inch
Length 3-1/2 inch
Thread Type Coarse
Unit of Measurement SAE
Grade 2
Head Style Carriage, domed head
Number in Package 50
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: What materials can these carriage bolts be used with?
A: They are designed to fasten a wooden face to either a wood or metal frame.


Q: Do I need a washer under the head?
A: No— the square shoulder bites into the material and prevents rotation, eliminating the need for a flat washer under the head.


Q: Is pre-drilling required?
A: Yes, drill a hole matching the 3/8 in. diameter for proper fit and installation.


Q: Are these suitable for outdoor applications?
A: Yes, the hot-dipped galvanized finish offers excellent rust resistance for exterior and high-moisture environments.


Q: What thread type do these bolts use?
A: They feature coarse SAE threads.


Crisp, Galvanized Hardware for Clean, Cohesive Builds

These carriage bolts bring a refined, utilitarian elegance to outdoor structures and rustic interiors alike. The domed head offers a subtle, polished detail while the galvanized finish harmonizes with weathered woods and industrial metals. Use them to unify deck railings, garden gates, or exposed timber joinery for a tailored, cohesive look. A must-have detail for achieving durable, design-forward craftsmanship.


Upgrade your project with galvanized reliability—add this 50-pack of Hillman 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: 37905600797

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Reviewed in the United States on October 1, 2025
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king0407
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★★★★★ 5
Nice!!!
Color: D Black Calendar
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Reviewed in the United States on May 25, 2026
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Glauber Galasso
Dallas, US
★★★★★ 1
Very very poor quality
Color: E Gold Black
Very poor quality. Looks like kid toy’s
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Reviewed in the United States on March 24, 2026
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Mohammad Almuhaisen
Charlottesville, US
★★★★★ 5
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Color: E Balck Silver, Color: E Balck Silver
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Mike and Wife
Carnegie, US
★★★★★ 4
I (still) like it
Color: B Black
Looks solid, considering it is lightweight plastic. Very large. I have a large wrist and still I needed to remove 3 links. Link removal took a while to figure out. Needed the video (QR code in box), a bright light and magnifying glasses (to see the inside arrows and tiny pins). It seems to keep good time, though the hands are slightly off -- for example, at 3 o'clock, the hour hand is a bit after 3, not right on 3. At 6:15, it seems it will be 7 very soon. Maybe it will make me early for a change LOL. Mostly I just really need a watch to tell the time, without having to pull out my phone. This does the job, with a bit of style and a touch of irony. Update, after 5 months of daily use: The watch still looks good and the timepiece still functions. Sadly, a small piece of plastic broke off the watch band, where the pin connects, so the band will not stay together. It is a larger piece of the band, near the dial, so there are not extra links of that size to repair it. There does not appear to be a warranty. Up to this point, I have received several compliments on the watch. I agree that the contrast is rather eye-catching. I may buy a second one and use the first watch for parts.
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