SKU: 33112275256

Hillman 5/16 in. x 1-1/2 in. Hot-Dipped Galvanized Steel Carriage Bolt, 100-Pack

Sale price$31.49 Regular price$34.99
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Description

Hillman 5/16 in. x 1-1/2 in. Hot-Dipped Galvanized Steel Carriage Bolt, 100-PackGalvanized Steel Carriage Bolts, 5 16" x 1 1 2", 100 Pack Durable Hillman carriage bolts made from steel with a hot dipped galvanized finish for superior corrosion resistance. Ideal for fastening wood to wood or wood to metal, the round head and square neck provide a clean, semi flush finish and self locking grip. Key Features: Rust Resistant Finish: Hot dipped galvanization protects against corrosion in outdoor and high moisture environments Secure

Galvanized Steel Carriage Bolts, 5/16" x 1-1/2", 100-Pack

Durable Hillman carriage bolts made from steel with a hot-dipped galvanized finish for superior corrosion resistance. Ideal for fastening wood to wood or wood to metal, the round head and square neck provide a clean, semi-flush finish and self-locking grip.


Key Features:

  • Rust-Resistant Finish: Hot-dipped galvanization protects against corrosion in outdoor and high-moisture environments
  • Secure Hold: Square neck locks into wood to prevent spinning during installation
  • Clean Appearance: Low-profile round head creates a semi-flush finish without a washer
  • Reliable Strength: Grade 2 steel construction with coarse SAE threads
  • Bulk Value: Convenient 100-pack for projects and jobsite stocking

Specifications Table:

Specification Details
Finish Hot Dipped Galvanized
Material Steel
Grade 2
Diameter 5/16 inch
Length 1-1/2 inch
Thread Type Coarse
Unit of Measurement SAE
Number in Package 100 pack
Packaging Type Boxed
Intended Use Fasten a wooden face to wood or metal frame
Head Style Round head with square neck (self-locking)
Package Dimensions 4.3 in L x 4.3 in W x 3.5 in H
Package Weight 4.5 lbs

Frequently Asked Questions (FAQ):

Q: What size are these carriage bolts?
A: They are 5/16 inch diameter and 1-1/2 inch length with coarse SAE threads.


Q: Are these suitable for outdoor use?
A: Yes. The hot-dipped galvanized finish offers strong corrosion resistance for outdoor and marine-adjacent applications.


Q: Do I need a washer under the head?
A: Typically no—the round head is designed to provide a semi-flush finish, and the square neck holds the bolt in place.


Q: What materials can I fasten with these?
A: They’re designed to fasten a wooden face to wood or to a metal frame.


Q: How many bolts come in the package?
A: 100 bolts per retail package.


A Clean, Industrial Accent for Outdoor Builds

The softly domed head of a carriage bolt brings a refined, tailored note to decks, gates, and garden structures. Hot-dipped galvanization lends a matte, weathered patina that pairs beautifully with natural woods and painted metals. Use them in rhythmic spacing along fence rails for subtle texture and cohesion. It’s the quiet hardware detail that elevates everyday outdoor architecture to luxe, lasting design.


Upgrade your project with rust-resistant, clean-finishing hardware—add this 100-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: 33112275256

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Steve
Port Orchard, US
★★★★★ 5
quality fabric and custom fit
Size: Large, Color: Cerise,orange,yellow,light Blue
excellent fit and fabric. This is my second order of this product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
S
Verified Purchase
Safety Guy
Lake Worth, US
★★★★★ 5
Good fitting support !
Size: Medium, Color: White
Just what the man needed. Very good contoured support. No jostling. Not a loose potato sack after an hour of wearing this. Highly recommended. Compare? Hanes, for example. Even the Jockey brand. Put those on, they're tight fitting, seemingly supportive. But they're not. They aren't contoured to fit. That's the whole idea. Contoured, to fit. And stay fitted. The trunk type, just like this wirarpa, and in half an hour it's loose loose loose fitting. A potato sack. No support. No support at all. That's not what a trunk brief is supposed to do. It's supposed to support, give comfort and confidence, stay in place feeling. Assuredness. And this wirarpa Mens Trunk does the job ! Wash and wear and wash and wear. Stays in shape, never gets stretched out and loose, for the fit.
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Reviewed in the United States on May 29, 2024
A
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Aiden
West Palm Beach, US
★★★★★ 5
Very Hard to Review. (But he gave it a 5????)
Size: Large, Color: White
This is more of a personal opinion I didn't wanna insult the vendor by rating it anything other than a five or four. Qualities is excellent. It's a very comfortable. It looks nice. The waist and height ratio is accurate and very good for the money value wise you get a decent amount of high-quality underwear. The best part is that it holds his shape and very comfortable. I'll keep the simple I rated a five because it's high-quality material very good construction and I've used this namebrand in the past before but for their cotton so I know they build very quality products. However, the material for me is overly too soft. This isn't necessarily a bad thing its the type of material (I've had the same type in shirts). This is more personal. When you're wearing the same material it's not noticeable because they blend in feeling wise the same.: however, this material type I've had in a T-shirt before. Very smooth very comfortable feels elegant but it becomes very noticeable on the skin that it's not the same material as the other clothing. Jeans/cotton etc let's say you're wearing cotton shorts. It stands out almost like a different layer of clothing, which I don't like the feeling of not being able to blend in with the rest of the clothing. This isn't me strictly being picking anybody who's ever worn different type of materials, there's a double feeling to it that some people may find annoying. Of course, if everything you're wearing is the same type of material bamboo type it would blend in better. But for me, it just stood out too much being used on cotton or say board shorts. It feels like something you would use with the same material/silk or for sleeping, but even then it becomes noticeable with cotton sleep shorts. I didn't return mine. I kept it, but I'm no longer using it.
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Reviewed in the United States on April 30, 2025
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Jay
Chelsea, US
★★★★★ 5
My search is over
Size: Medium, Color: Black
Every few years I have to conduct an underwear search because my existing pairs are failing and the same make/model is no longer available. This year I tried several options until I found these. They are a good length, stopping at the upper thigh. They are comfortable and the elastic is tight enough to stay in place but not cut off my circulation.
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Reviewed in the United States on December 30, 2025
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Ramon Cervantes
Chelsea, US
★★★★★ 3
Wirapa is a Bad Choice
Size: Large, Color: Black 01
Right size wrong fit ugh uncomfortable never buying these again i should have known better
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Reviewed in the United States on April 19, 2026

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