Hillman 5/16 in. x 4 in. Hot-Dipped Galvanized Steel Carriage Bolt, 50-Pack
SKU: 39278307079

Hillman 5/16 in. x 4 in. Hot-Dipped Galvanized Steel Carriage Bolt, 50-Pack

Sale price$34.19 Regular price$37.99
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Description

Hillman 5/16 in. x 4 in. Hot-Dipped Galvanized Steel Carriage Bolt, 50-Pack5 16 in. x 4 in. Hot Dipped Galvanized Carriage Bolts (50 Pack) Durable Hillman carriage bolts designed for fastening wood to wood or wood to metal with a smooth, dome head finish. Hot dipped galvanized steel resists rust for long lasting outdoor and structural applications. Key Features: Rust Resistant Protection: Hot dipped galvanized steel stands up to moisture and outdoor exposure Secure Hold: Square neck locks into wood to prevent spinning during

5/16 in. x 4 in. Hot-Dipped Galvanized Carriage Bolts (50-Pack)

Durable Hillman carriage bolts designed for fastening wood-to-wood or wood-to-metal with a smooth, dome head finish. Hot-dipped galvanized steel resists rust for long-lasting outdoor and structural applications.


Key Features:

  • Rust-Resistant Protection: Hot-dipped galvanized steel stands up to moisture and outdoor exposure
  • Secure Hold: Square neck locks into wood to prevent spinning during tightening
  • Clean Finish: Round, low-profile head provides a semi-flush appearance without a washer
  • Strong and Reliable: Grade 2 steel with coarse threads for general construction fastening
  • Bulk Value: 50 bolts per box for projects and jobsite needs

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/16 inch
Length 4 inch
Material Steel
Finish Hot Dipped Galvanized
Grade 2
Thread Type Coarse
Unit of Measurement SAE
Head Style Round carriage head with square neck
Number in Package 50 pack
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: What size are these carriage bolts?
A: They are 5/16 in. diameter by 4 in. length with coarse threads.


Q: What material and finish are used?
A: They are made of Grade 2 steel with a hot-dipped galvanized finish for corrosion resistance.


Q: Are nuts and washers included?
A: No, this listing is for bolts only; purchase matching 5/16 in. nuts and washers separately if needed.


Q: Where are these bolts typically used?
A: Ideal for fastening wood to wood or wood to metal in decks, fences, and general construction.


Q: How many come in the package?
A: 50 bolts per retail package.


A Clean, Crafted Finish for Outdoor Builds

The rounded carriage head delivers a neat, unobtrusive accent that lets the wood grain take center stage. I love the tactile, chalky sheen of hot-dipped galvanization—it feels honest and architectural. Use them in rhythmic rows along a fence or garden gate for subtle texture and cohesion. It’s the kind of quiet hardware that elevates everyday structures into refined, lasting design.


Choose these galvanized carriage bolts for a clean look and rust-proof strength on your next 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: 39278307079

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Mom_of_TeenageTwo
Bozeman, US
★★★★★ 3
Squeaky balls for big dogs
Color: Squeaky-4 Pack, Size: Medium
I wanted a cheaper alternative to the Kong squeaky balls but unless you have big dogs that have powerful jaws, it is challenging for small and some medium dogs to squeak these. My dogs lost interest when they realized they couldn't squeak them. I will have to pass them off to a friend who has large dogs.
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Reviewed in the United States on May 20, 2026
A
Verified Purchase
Anne Corona Hipps
Louisville, US
★★★★★ 5
Moms dog here…reviewing cos it’s mine!
Color: Squeaky-4 Pack, Size: Medium
Moms corgo here. Reviewing the squeaky balls mom bought. First off..they’re green. I don’t know what green exactly is cos I’m colorblind, so whatever that is it is and because it’s mine, I like it. Secondly, they’re fluffy. It’s an annoying texture that I like to peel off, but these are tough and peeling them is a struggle. Thirdly, the bounce. I don’t know where these balls think they’re going to think my mom is so repulsive, but they bounce just high enough to catch them and bring the escapee back to mom when I feel like they need to go back to her, otherwise, I take them to a safe spot to release into the wild…but mom always captures them and they always escape. I tell you, it’s a vicious cycle. Fifthly…the squeak!! That rotten vulgar noise!! I want to unalive those things so bad!! Balls in the past were no match for my jaws of death, but these?? These are resilient and have quite the will to live! I have yet to destroy one!! To wrap this up…Corgo approves and declares them mine. I like them. I think your doggo will like them too. But you can’t have mine..cos they’re mine. *drops the corgo mic*
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Reviewed in the United States on May 14, 2024
C
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Christina Johnson
Draper, US
★★★★★ 5
Not for aggressive chewers
Color: Non Squeaky-12 Pack, Size: Medium
You get a good amount of balls for the price. My dogs loved them but unfortunately they did not last long. That is not the company’s fault, my dogs are very toy aggressive and destroy almost every toy.
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Reviewed in the United States on December 31, 2025
M
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Mitch
Natrona Heights, US
★★★★★ 5
Our German Sheppard loves these
Size: Medium
These cost a bit more than tennis balls, but they are so much nicer and longer lasting. For starters, they stay cleaner than tennis balls because they’re smooth rubber. Dirt won’t build up on them and if anything does stick, like grass or soil, it falls off once the dog slobber dries. They’re also thick, so they don’t fall apart or blow out like a normal tennis ball does in our dog’s jaws after 30 seconds. Our GS chomps on these like crazy and the only damage they’ve suffered is a crack that developed from the edge of the hole, but the crack is growing very slowly and none of these balls have totally failed yet. The balls do whistle when thrown ant high speed and that may help a dog track and locate it, but I’m not sure. Our neighbors hear the whistling too so it’s far from silent. Lastly the orange ball is easy to locate out in our yard, but the dark blue practically disappears.
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Reviewed in the United States on April 6, 2025
C
Verified Purchase
Casey B
Louisville, US
★★★★★ 5
Great for smaller dogs
Size: Small
These two balls are perfect for the smaller mouthed dog that loves to play fetch. These balls are not only super durable (lots of teeth biting), but float in the baby pool we use for our miniature dachshunds. The value here is much better than you’d find anywhere else. The noise, if bitten hard enough, was “low” at best. Easy to spot/find if overthrown. Will definitely buy again once these are in bad repair; so far, so good-love these for my fur babies!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 8, 2024

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