Hillman 3/8 in. x 1 in. Zinc-Plated Steel Carriage Bolt (100-Pack)
SKU: 27036327933

Hillman 3/8 in. x 1 in. Zinc-Plated Steel Carriage Bolt (100-Pack)

Sale price$28.79 Regular price$31.99
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Hillman 3/8 in. x 1 in. Zinc-Plated Steel Carriage Bolt (100-Pack)3 8 in. x 1 in. Zinc Plated Steel Carriage Bolts, 100 Pack Durable Hillman carriage bolts secure wood to wood or wood to metal projects with a smooth, domed head and square neck that locks into place. Zinc plated Grade 2 steel offers dependable strength and corrosion resistance for general indoor and sheltered outdoor use. Key Features: Secure Hold: Square neck under the rounded head locks into wood to prevent spinning during tightening Corrosion

3/8 in. x 1 in. Zinc-Plated Steel Carriage Bolts, 100-Pack

Durable Hillman carriage bolts secure wood-to-wood or wood-to-metal projects with a smooth, domed head and square neck that locks into place. Zinc-plated Grade 2 steel offers dependable strength and corrosion resistance for general indoor and sheltered outdoor use.


Key Features:

  • Secure Hold: Square neck under the rounded head locks into wood to prevent spinning during tightening
  • Corrosion-Resistant Finish: Zinc-plated steel provides rust resistance and a clean, consistent appearance
  • General-Purpose Strength: Grade 2 steel suitable for a wide range of fastening applications
  • SAE Coarse Threads: Easy assembly with compatible nuts/washers for 3/8 in. hardware
  • Contractor Quantity: 100 bolts per box for efficient stocking and jobsites

Specifications Table:

Specification Details
Brand Hillman
Type Carriage Bolt
Diameter 3/8 inch
Length 1 inch
Material Steel
Finish Zinc Plated
Grade 2
Thread Type Coarse
Unit of Measurement SAE
Head Style Domed/round head with square neck
Count 100 per package
Packaging Type Boxed
Package Dimensions (L x W x H) 4.3 in x 4.3 in x 3.5 in
Package Weight 4.7 lb

Frequently Asked Questions (FAQ):

Q: What size are these carriage bolts?
A: They are 3/8 in. diameter by 1 in. length with coarse (SAE) threads.


Q: What material and grade are they?
A: They are made from Grade 2 steel with a zinc-plated finish.


Q: Are these suitable for outdoor use?
A: The zinc plating offers light corrosion resistance, making them fine for indoor and some sheltered outdoor applications; for harsh or coastal environments, consider stainless or hot-dipped galvanized hardware.


Q: Do these include nuts and washers?
A: No. This box includes 100 carriage bolts only; nuts and washers are sold separately.


Q: How do carriage bolts stay from spinning?
A: A square section beneath the domed head embeds into the wood, locking the bolt in place as the nut is tightened.


A Clean, Polished Fastener for Seamless Woodwork

The domed head lends a subtle, tailored finish that feels intentional rather than utilitarian. I love how the square neck tucks into timber, keeping the face pristine without extra hardware clutter. Pair these with oiled oak or painted millwork for a crisp, modern-meets-classic detail. A small choice that elevates craft—and the hallmark of refined, livable luxury.


Outfit your next build with these zinc-plated carriage bolts for a clean look and reliable hold—add the 100-pack to your cart now.

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: 27036327933

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Isabelle Craul
Louisville, US
★★★★★ 5
Lovely cabinet but needs time to put together!
Color: White, Size: 23x29
The overall cabinet is what I was looking for. Very sturdy and good looking. The main problem my husband had was with the directions to put it together. The pictures were hard to see and the majority of written directions were hard to understand. Definitely took longer to put together than should have taken. But when it was completed and hung, I have to say I love it. Be prepared to have patience and enough time set aside to put it together.
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Reviewed in the United States on January 10, 2026
M
Verified Purchase
Mark
Pawtucket, US
★★★★★ 5
Solid cabinet; all aligns well
Color: White-1927, Size: 19x27
Amazon declined my first buy/ship if this cabinet as it was damaged when it reached Amazon. That was fine, but I still had to go thru ‘return’ process of Amazons, w/o a product to return; so I used their ‘chat feature’ to explain—went smoothly, and they secured the replacement for me; I just need to check latest bill to be sure I was only charged once. OK, now onto the cabinet: Solid materials (for MDF-which I generally avoid), and assembled + installed in just 1hr. Btw, I add ‘glue’ the the provided 8 wood dowels used for assembly. The doors hinge adjustments are easy to align doors for final finish. While this cabinet ‘hangs’ on its cleat, I did add one screw to the inside-bottom of cabinet to ensure no one inadvertently may ‘lift’ the cabinet off its cleat. This is rock solid secured to me wall above toilet for great extra storage in the kids’ bath! Overall, a good buy; but did expect it to be cheaper price considering MDF material and made in China. I look for country of origin now and try to buy from US friendly countries. Good luck, Mark in NY.
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Reviewed in the United States on April 1, 2024
R
Verified Purchase
R Kowicki
Los Angeles, US
★★★★★ 5
Very impressive
Color: Navy Blue, Size: 23x29
I've had a lot of experience with modern furniture that you have to put together. Most of it, I worry about the durability of the product. Most is put together with repurposed particle board. So it's heavy and I would think not durable - especially in a damp environment. Saying that, I was very impressed with this product. My experience with the product to this point has been the best of those type of products. It shipped very well...everything in place and neatly packed. The engineered wood (resembles plastic) seems solid, water resistant at a minimum, and scratch resistant. The instructions provided - while the product was easy to assemble - were amongst the clearest I've seen from such a product. What impressed me the most was the thought behind the design of this product. The hinges are perfect for the product. The doors can be easily removed by pushing a button on the hinge. The holes on the boards were perfectly drilled - so much so that I didn't have to pound any board to put them together. The back wasn't nailed on and the slot used for the backing was spot on. If I had to choose negatives (and I'm really nit-picking because this is really designed that well) it was that the shelf ends up being a bit loose and I would have liked the mounting board to match the width of the slot it was being used to fill. Both can be fixed at the house by home products and screws. I was so impressed that I would go and buy another product from this manufacturer (and look for the manufacturer by name). IT is that good.
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Reviewed in the United States on December 4, 2022
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David Steffen
Lowell, US
★★★★★ 5
Great looking, nice quality
Color: Black, Size: 23x29
There is some assemble required. if your not ready to assemble this product may not be for you. the machining was spot on, all parts went together as they should.
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Reviewed in the United States on November 24, 2025
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Beth Braun
West Palm Beach, US
★★★★★ 5
Stylish, sturdy cabinet
Color: White
This cabinet was even nicer than I thought it would be—stylish, sturdy, and easy to assemble. Perfect for holding medicines and small items in the bathroom, easy to see and find, out of reach of children.
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Reviewed in the United States on May 8, 2026

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