SKU: 37905600797

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

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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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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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A&B
Birmingham, US
★★★★★ 5
Perfect replacements for the G30
I wanted to replace the filters in my old G30 more frequently, as it's still running like a champ. I figured keeping up on it more often would help prolong its life expectancy. So far, so good. The less expensive replacement parts definitely help me not get upset every time I want to replace something. All parts from this pack fit perfectly, and the price is reasonable enough to avoid pushing replacements to the very last minute—at least it did for me, lol.
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Reviewed in the United States on July 10, 2024
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BR
Lexington, US
★★★★★ 5
hard to find elsewhere
Size: 20 PACK
good price for a hard to find item
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Reviewed in the United States on November 14, 2025
R
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Ron & Ellen
Bozeman, US
★★★★★ 5
Great product for money but pay attn to your model filters are different on newer models.
Size: 20 PACK
The rollers work great and fit nicely into my Euphy which turned out I have a early version of which means none of the filters don’t fit my Euphy unfortunately and I hadn’t payed attention to the filters I was looking to get a 2 pack of rollers, the filters look nice though like they would make a great seal with the plastic and seal around them. I won’t buy them again for sure though for obvious reasons. Euphy is so much quieter then my second vacuum that’s a Roomba and she definitely gives her a run for her money and when it dies I will definitely be replacing her with a Euphy.
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Reviewed in the United States on April 13, 2021
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 5
Buy these
Size: 20 PACK
I love ordering these Replacement parts. These work just as good
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Reviewed in the United States on July 4, 2025
L
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Luke Howard
Port Orchard, US
★★★★★ 5
Very great and durable option.
Style: for Saros 10R / Saros 20 / Qrevo CurvX
These parts are the perfect option when maintaining your robot vacuum. They fit the machine perfectly and are just as if not more durable than the company provided parts. Definitely recommended.
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Reviewed in the United States on March 28, 2026

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