SKU: 35622772418

Hillman 3/8 in. x 4-1/2 in. Hot Dipped Galvanized Steel Carriage Bolt, 50-Pack

Sale price$52.19 Regular price$57.99
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Description

Hillman 3/8 in. x 4-1/2 in. Hot Dipped Galvanized Steel Carriage Bolt, 50-Pack3 8 in. x 4 1 2 in. Galvanized Carriage Bolts (50 Pack) Heavy duty Hillman carriage bolts designed for fastening wood to wood or wood to metal. Hot dipped galvanized steel resists rust and corrosion for long lasting outdoor performance. Key Features: Corrosion Resistant: Hot dipped galvanized finish stands up to moisture and outdoor exposure Secure Hold: Square neck locks into wood to prevent spinning during installation Clean, Low Profile Head: Dome

3/8 in. x 4-1/2 in. Galvanized Carriage Bolts (50-Pack)

Heavy-duty Hillman carriage bolts designed for fastening wood to wood or wood to metal. Hot-dipped galvanized steel resists rust and corrosion for long-lasting outdoor performance.


Key Features:

  • Corrosion Resistant: Hot-dipped galvanized finish stands up to moisture and outdoor exposure
  • Secure Hold: Square neck locks into wood to prevent spinning during installation
  • Clean, Low-Profile Head: Dome head provides a semi-flush finish—no washer needed under head
  • Versatile Use: Ideal for decks, fences, and general construction fastening
  • Bulk Value: 50-pack for efficient project coverage

Specifications Table:

Specification Details
Brand Hillman
Type Carriage Bolt
Diameter 3/8 inch
Length 4-1/2 inch
Material Steel
Finish Hot Dipped Galvanized
Thread Type Coarse
Grade 2
Unit of Measurement SAE
Head Style Round/Dome head with square neck
Number in Package 50
Packaging Type Boxed
Package Dimensions (L x W x H) 6.8 in x 4.5 in x 3.3 in
Package Weight 7.3 lb

Frequently Asked Questions (FAQ):

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


Q: What size are the bolts?
A: Diameter 3/8 inch with a length of 4-1/2 inches and coarse threads.


Q: Are nuts included?
A: Nuts are typically sold separately; check your hardware selection to pair with 3/8 in. coarse-thread nuts and washers as needed.


Q: Can these be used outdoors?
A: Yes, the hot-dipped galvanization makes them suitable for exterior applications and treated lumber.


Q: Do I need a special tool to install them?
A: No driving tool is required for the head; use a wrench on the nut while the square neck seats into the wood to prevent spinning.


A Clean, Classic Fastener for Timeless Outdoor Builds

The gentle dome of the carriage head delivers a refined, unobtrusive look that keeps surfaces visually calm. I love how the square neck disappears into the timber, leaving a tidy, architectural finish. Use them to detail a garden gate or bench where hardware should feel intentional, not loud. Durable galvanization makes them a quiet luxury essential for outdoor structures that age gracefully.


Choose this 50-pack of galvanized carriage bolts for reliable, clean-looking fastening on your next deck, fence, or outdoor build.

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: 35622772418

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4.2 ★★★★★
Based on 24 reviews
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A
Verified Purchase
albert smart
West Palm Beach, US
★★★★★ 5
Good
Configuration: 4-Stroke, Size: 1 GA, Case of 3
Good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
M
Verified Purchase
mattw
Chelsea, US
★★★★★ 4
Oily situation lol
Configuration: 4-Stroke, Size: 1 GA
Honestly how do you write a review of this product? I would have to run tests for years on multiple oils on various engines to do so. The value was good however and shipping was great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2025
P
Verified Purchase
Peter Schott
Chelsea, US
★★★★★ 5
Use the best oil to protect your investment
Configuration: 4-Stroke, Size: 1 GA
Great product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2025
S
Verified Purchase
Steve M.
Draper, US
★★★★★ 5
Works well. You need to drill a 3/8” hole
Appears to be well made, alignment bar slides in nicely. As stated, you need to drill a hole in the bar for the gimble bearing driver, the directions are not clear, what I did was before I take out the old gimble bearing, put an O ring on the bar close to the last step on the bar, slide the bar all the way in, then carefully slide the bar out, this marks the distance from the back of the gimble bearing to where the shaft on the outdrive bottoms out, move the O ring a 1/4” towards the stepped part of the alignment tool (this is so you won’t bottom out the alignment tool when driving the gimble bearing in) then slide the driver puck up to the O ring and use a 3/8” diameter transfer punch through the side hole in the puck to mark the bar. You need to drill a 3/8” diameter hole in the alignment bar, two V blocks, some clamps, and a drill press will make drilling much easier, after the bar is securely mounted and centered in the drill press, use a center drill, then 1/4” drill first, using plenty of oil, drill all the way through, then use the 3/8” drill, deburr both sides and you should be good to go. People complain that it doesn’t come pre-drilled, the reason is that not all out drives are the same so you have to fit it to the outdrive that you have. Fortunately, I have a machine shop at my house and have a jig setup with various drill bushings, but the method I described above should work for you. Just make sure you’re perfectly centered and secure before you start drilling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
N
Verified Purchase
Nancy filippi
Carnegie, US
★★★★★ 5
A must pull your gimbal bearing
You do need to drill a hole but worked perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2025

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