Hillman 3/8 in. x 4 in. Hot-Dipped Galvanized Steel Carriage Bolt, 50-Pack
SKU: 90668775980

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

Sale price$49.49 Regular price$54.99
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Description

Hillman 3/8 in. x 4 in. Hot-Dipped Galvanized Steel Carriage Bolt, 50-PackHot Dipped Galvanized Carriage Bolts, 3 8" x 4", 50 Pack These Hillman carriage bolts fasten a wooden face to wood or metal frames, delivering a clean, semi flush finish. Made of steel with a hot dipped galvanized coating, they provide strong holding power and robust rust resistance for outdoor and structural projects. Key Features: Corrosion Protection: Hot dipped galvanized coating resists rust for long lasting outdoor use Clean Finish: Rounded head

Hot-Dipped Galvanized Carriage Bolts, 3/8" x 4", 50-Pack

These Hillman carriage bolts fasten a wooden face to wood or metal frames, delivering a clean, semi-flush finish. Made of steel with a hot-dipped galvanized coating, they provide strong holding power and robust rust resistance for outdoor and structural projects.


Key Features:

  • Corrosion Protection: Hot-dipped galvanized coating resists rust for long-lasting outdoor use
  • Clean Finish: Rounded head eliminates need for a washer and sits semi-flush
  • Self-Locking Design: Square neck prevents spinning during installation
  • Heavy-Duty Build: Grade 2 steel construction with coarse threads for secure fastening
  • Project-Ready Quantity: Convenient 50-pack for bulk jobs

Specifications Table:

Specification Details
Brand Name Hillman
Material Steel
Finish Hot Dipped Galvanized
Grade 2
Diameter 3/8 inch
Length 4 inch
Thread Type Coarse
Unit of Measurement SAE
Number in Package 50
Packaging Type Boxed
Category Carriage Bolts
Package Height 3.3 in
Package Width 4.5 in
Package Length 6.8 in
Package Weight 6.8 lbs

Frequently Asked Questions (FAQ):

Q: What materials can these carriage bolts fasten?
A: They are designed to fasten a wooden face to wood or metal frames.


Q: Do I need a washer under the head?
A: No—the flat, rounded head is designed to provide a semi-flush finish without a washer.


Q: Are these suitable for outdoor use?
A: Yes, the hot-dipped galvanized finish offers excellent rust prevention for exterior applications.


Q: What thread type do they use?
A: Coarse SAE threads.


Q: What size are these bolts?
A: Diameter 3/8 inch with a 4 inch length.


Elevate Outdoor Builds with Galvanized Elegance

The rounded head of these carriage bolts brings a refined, minimal silhouette to fences, benches, and garden structures. Their hot-dipped galvanized sheen adds a subtle industrial note while standing up to the elements. Pair them with weathered wood and matte black hardware for a balanced, timeless composition. A staple detail that quietly defines luxurious, well-crafted outdoor spaces.


Secure your next project with durable, rust-resistant performance—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: 90668775980

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Nibi
Lowell, US
★★★★★ 5
Good shelf
Color: Black, Size: 24 inches
Lightweight shelves. Easy to assemble
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Reviewed in the United States on May 12, 2026
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Keisha
Lexington, US
★★★★★ 4
Sturdy
Color: White, Size: 15 inches, Color: White, Size: 15 inches
Love the shelves. Nice touch to my bathroom. Easy enough to install. They're not holding anything too heavy so can't speak too much on that but they do have a nice width.
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Reviewed in the United States on March 30, 2026
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Kaitlynn
Louisville, US
★★★★★ 5
Good for light stuff
Color: Black, Size: 15 inches, Color: Black, Size: 15 inches
Good product. Very light though and if it’s in dry wall won’t hold something really heavy. I don’t think it would hold 20 pounds just light. I put over my washer and dryer and put one right on top that way I can put heavy stuff on that side without it weighing down and being ripped out of the wall. I won’t be putting heavy stuff on the right side I used 4 pieces and the wall is about 60-62 inches long
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Reviewed in the United States on December 5, 2025
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Reviewer
Boise, US
★★★★★ 5
Perfect sized floating shelves
Color: Black, Size: 24 inches, Color: Black, Size: 24 inches
These are great and the perfect width. I had my contractor install them because my tile had to have a hole drilled into it. I love that it looks seemless and flat to the tile. New bathroom renovation. I am very pleased. Holds a few towels also candles and a little plant with extra space. Perfect for a minimal look or if you have a small bathroom. Color was spot on.
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Reviewed in the United States on March 30, 2026
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R. Fleming
Bozeman, US
★★★★★ 3
Not What I Expected
Color: White, Size: 32 inches
This set of floating shelves was a disappointment. They’re advertised as holding 20 pounds, but mine began to bend with barely 10 pounds on them. All the screws and anchors were installed tightly and correctly, yet the metal brackets still warped under minimal weight. The shelves look fine on the wall, but I’m leaving them up only because I don’t want to patch a dozen holes—not because they’re sturdy. Definitely not the quality or strength I expected.
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Reviewed in the United States on April 13, 2026

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