SKU: 42396517231

Hillman 5/16 in. x 3-1/2 in. Stainless Steel Carriage Bolts (25-Pack)

Sale price$41.39 Regular price$45.99
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Description

Hillman 5/16 in. x 3-1/2 in. Stainless Steel Carriage Bolts (25-Pack)Stainless Steel Carriage Bolts, 5 16 in. x 3 1 2 in. (25 Pack) Durable Hillman stainless steel carriage bolts provide a smooth, domed head and square neck that locks into wood for secure fastening. Ideal for exterior projects, they resist rust and corrosion and deliver a clean, semi flush finish. Key Features: Corrosion Resistant: Stainless steel construction stands up to outdoor and marine environments Secure Hold: Square shoulder locks into wood to

Stainless Steel Carriage Bolts, 5/16 in. x 3-1/2 in. (25-Pack)

Durable Hillman stainless steel carriage bolts provide a smooth, domed head and square neck that locks into wood for secure fastening. Ideal for exterior projects, they resist rust and corrosion and deliver a clean, semi-flush finish.


Key Features:

  • Corrosion Resistant: Stainless steel construction stands up to outdoor and marine environments
  • Secure Hold: Square shoulder locks into wood to prevent spinning during tightening
  • Clean Finish: Smooth, domed head creates a semi-flush, snag-free surface
  • Coarse Thread: SAE coarse threading for strong, reliable assembly
  • Value Pack: Includes 25 bolts sized 5/16 in. diameter x 3-1/2 in. length

Specifications Table:

Specification Details
Diameter 5/16 inch
Length 3-1/2 inch
Material Stainless Steel
Finish Stainless steel
Thread Size 5/16-18 (coarse)
Thread Type Coarse
Unit of Measurement SAE
Head Style Domed carriage head
Neck Style Square shoulder
Number in Package 25
Packaging Type Boxed
Intended Use Fasten wood face to wood or metal frame
Pack UPC (on box) 008236144932

Frequently Asked Questions (FAQ):

Q: Do these bolts include nuts or washers?
A: No—this pack contains only the carriage bolts; nuts and washers are sold separately.


Q: Can I use these outdoors?
A: Yes, the stainless steel material offers excellent rust and corrosion resistance for exterior applications.


Q: What tools are needed for installation?
A: Tighten from the nut side; the square neck locks into the wood to prevent bolt rotation, so no driver is needed for the head.


Q: What thread size are these?
A: They are 5/16 in. diameter with coarse SAE threads (5/16-18).


Q: What materials are they best for?
A: Designed to fasten a wood face to wood or metal framing.


Sleek Strength for Thoughtful Builds

A polished dome of stainless steel lends a refined, unobtrusive accent to woodwork while delivering steadfast performance. The square-shoulder detail is the quiet hero—discreetly locking into timber for a flawless, flush look. Pair with cedar or painted millwork where hardware should disappear into the narrative. For elevated outdoor living, these bolts are the subtle signature of craftsmanship.


Upgrade your project with corrosion-proof, clean-finish carriage bolts—add this 25-pack 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: 42396517231

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Eric
Birmingham, US
★★★★★ 5
Great squeaker balls - dogs favorite but not for aggressive chewers.
We have a chocolate Labrador retriever and a golden retriever who love balls. Tennis balls don’t last. We’ve been very happy with the ChuckIt quality. We especially love the bucket of orange balls those last until we lose them. We’ve tried to other products from ChuckIt and they’ve always been excellent. Squeaker toys are a special favorite in our home. However most don’t last because our dogs are moderately aggressive chewers. They haven’t destroyed these… yet. HOWEVER, we have a ball-obsessed, very aggressive chewer grand dog Sadie (“Ball Is Life”) who visits frequently. She goes nuts over anything that squeaks. She’s not satisfied until all squeakers are dead. And she destroy this ball in about 2 minutes. It’s fine when she supervised and we’re playing fetch. But when left on her own, she’ll find these balls and destroy them. We had 6 and in 2 days were down to four. I will still give it 5 stars because nothing is indestructible. And Sadie is an exceptionally aggressive chewer. On durability, these are above average maybe 7/10. But be warned, aggressive chewers will destroy them.
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Reviewed in the United States on January 12, 2025
J
Verified Purchase
Jeannine
Phoenix, US
★★★★★ 5
Durable except squeaker only works for a few minutes
My pups loves these balls mostly for the squeaker. Company dose not glue the squeaker in place inside of the ball so after a few chews from pup the squeaker pops out n bounces around the inside of the ball. Than after awhile the end pops out n that's a good thing for me due to I'm able to glue the squeaker back in place then glue end back also. Now the squeaker works again. Easy fix yet company should have done this before my pups played with them. Scary, what if my pups chew the ball n by chance chocks on the squeaker? I now take the ball apart when they 1st arrive n glue the squeaker n end in place the day before they play with them. Company should just glue the squeaker in place before they sell them to keep our pups safe from chance of chocking.
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Reviewed in the United States on October 16, 2024
E
Verified Purchase
Erica
San Leandro, US
★★★★★ 5
My dog’s all-time favorite toy!!
My boxer mix LOVES LOVES LOVES the Chuck it ball! It is seriously his favorite toy. I think he likes how much give it has when he chomps on it, kind of like a dog stress ball. It does squeak when chewed but the squeak typically goes away in about a week likely due to saliva getting inside the ball. It bounces really well, my dog loves to catch it mid-bounce. Nice smooth rubber, easy to clean. It is very durable, we’ve never had one that broke. We usually only have to buy more when they go missing. The size is similar to a tennis ball. I’ve also noticed there is a difference between the mostly blue chuck it ball and the mostly orange one. The orange one is harder than the blue. My dog can tell the difference and only likes these blue ones.
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Reviewed in the United States on July 19, 2024
O
Verified Purchase
Octavia Schultz
Lexington, US
★★★★★ 5
Only kind my dog likes
The Chuck It rubber balls are the only kind of balls my dog will actually play with. He loves the squeaker in them and they’re very durable.
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Reviewed in the United States on September 19, 2025
A
Verified Purchase
Austin Harbaugh
Cuba, US
★★★★★ 5
Long lasting squeaker for heavy chewing
The first squeaky toy to ever last more than a day for my heavy chewing dog. Got a 2pk 4 months ago. They squeezed for about 3 months, absolutely amazing. Got 6 more for Christmas and my pup is so happy.
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Reviewed in the United States on December 31, 2025

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