Hillman 5/16 in. x 4-1/2 in. Hot-Dipped Galvanized Steel Carriage Bolts, 50-Pack
SKU: 15869981220

Hillman 5/16 in. x 4-1/2 in. Hot-Dipped Galvanized Steel Carriage Bolts, 50-Pack

Sale price$37.79 Regular price$41.99
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Description

Hillman 5/16 in. x 4-1/2 in. Hot-Dipped Galvanized Steel Carriage Bolts, 50-PackHot Dipped Galvanized 5 16 in. x 4 1 2 in. Carriage Bolts (50 Pack) Durable Hillman carriage bolts for fastening wood to wood or wood to metal with a low profile, domed head. Hot dipped galvanized steel resists rust for long lasting outdoor performance in decks, fences, and general construction. Key Features: Corrosion Resistance: Hot dipped galvanized steel stands up to moisture and outdoor exposure Secure Hold: Square neck under the head locks into

Hot-Dipped Galvanized 5/16 in. x 4-1/2 in. Carriage Bolts (50-Pack)

Durable Hillman carriage bolts for fastening wood-to-wood or wood-to-metal with a low-profile, domed head. Hot-dipped galvanized steel resists rust for long-lasting outdoor performance in decks, fences, and general construction.


Key Features:

  • Corrosion Resistance: Hot-dipped galvanized steel stands up to moisture and outdoor exposure
  • Secure Hold: Square neck under the head locks into wood to prevent spinning during tightening
  • Clean Finish: Dome head provides a semi-flush, washer-free appearance
  • Coarse Thread: SAE coarse thread for quick assembly and strong grip
  • Bulk Value: 50 bolts per box for efficient project coverage

Specifications Table:

Specification Details
Brand Hillman
Diameter 5/16 inch
Length 4-1/2 inch
Material Steel
Finish Hot Dipped Galvanized
Grade 2
Thread Type Coarse (SAE)
Head Style Carriage (domed) with square neck
Number in Package 50 pack
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: What materials can these carriage bolts fasten?
A: They are designed primarily for fastening wood to wood or wood to metal frames.


Q: Do I need a washer under the head?
A: Typically no—the domed head is designed to sit semi-flush without a washer, though washers and nuts may be used on the threaded end as needed.


Q: Are these suitable for outdoor use?
A: Yes, the hot-dipped galvanized finish provides strong rust resistance for exterior projects.


Q: What thread type do these bolts use?
A: SAE coarse thread.


Q: What grade are these bolts?
A: Grade 2 steel, suitable for general-purpose structural and carpentry applications.


A Clean, Workmanlike Finish for Outdoor Woodwork

There’s a quiet elegance in hardware that disappears into the craft. These galvanized carriage bolts offer a soft, domed cap that reads crisp and intentional on decks, gates, and garden structures. I love the square-neck detail—hidden, yet essential—keeping the face smooth and composed. Use them in rhythmic rows along a cedar fence for a tailored, architectural touch that also lasts; consider these a small luxury of smart construction.


Choose these galvanized carriage bolts for a clean, durable fasten that elevates 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: 15869981220

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SnowshoePete
Natrona Heights, US
★★★★★ 5
My 90 lb. Pitbull's All-Time Fave Toy
Size: Large, Color: Coral, Size: Large, Color: Coral
I ordered a plethora of new toys for Bruce to keep him occupied while I am working remotely from home. Poor guy gets so bored while I'm stuck in front of my computer 8+ hours a day. All the other toys are animated, but this one is just a big floppy chewy squeaky toy. Bruce quickly lost interest in all the other chirping, hopping, and twirling toys and fell in love with "Diny". When I opened Diny and gave it to Bruce, he had the elated and surprised look of a 3 yr old at Christmas. And he stayed that happy for hours, and then each time he picked up Diny to play. Diny became his go-to toy over all others (and there are many!). It is well made out of durable fabric, and they did not stuff it full of kapoc (I hate kapoc in dogs toys!). And it is delightfully low-tech. Normally he tears a squeaky toy apart as soon as he can isolate the squeaky mechanism. But cleverly, the squeaky box is loose in the long belly so it moves from one end to the other as the toy is handled. That made it difficult for Bruce to locate it. The toy remained in good condition for 2 weeks of near constant attention by Bruce. But yesterday he zeroed in on the squeaky box and ripped Diny to shreds. I was sad to see Diny go so soon. But boy-howdy was Bruce happy with it. I'm gonna buy another because we liked it so much. And so did I : )
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2024
J
Verified Purchase
Jason W
Phoenix, US
★★★★★ 5
This is one “under the radar” gem!!
Size: Large, Color: Coral
This is one “under the radar” gem!! Very strong internal squeaker and way tougher than it looks. My big 125lb Shepard-Husky mix gave it heck, then made it his new buddy. He’ll occasionally give it the business but on the whole, it’s surprisingly tough and my big boy loves it. Nice price!!
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Reviewed in the United States on May 10, 2026
H
Verified Purchase
H
Chelsea, US
★★★★★ 4
Cute but small
Size: Large, Color: Skinny Green
Cute stuffy and has not yet ripped. While my dogs plays with it, the toy is a bit small for him. For reference he is 120lbs.
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Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jenny J
Lowell, US
★★★★★ 5
My Puppy Loves this Indestructible Dragon
Size: Large, Color: Pink, Size: Large, Color: Pink
My puppy (8 month old black lab mix) loves, loves, loves her dragon. She has had it for 2 months now. It is one of her favorites and gets daily rough play time. It's her go-to toy for fetch and tug games, as well as just general mouthy play. The squeaker gave out after about 4 weeks, but she would binge squeak for prolonged periods (kind of like chomping on gum) so it was almost a blessing when it went silent. She still chomps on it, but at least now I don't have to hear it. Other than the fact that it's a little grungy and bedraggled from so much loving, it is still in amazing shape. The seams and fur are all still intact. There are no visible holes, rips, or weak spots. I love Chew Guard Technology. This dragon replaced her goDog Iguana (from PetSmart) that developed a tear in the fur after about 4 months of heavy use. (It was superficial, just the outer fur layer and not the innards, but we disposed of it before she could eat more fur.) She can be pretty rough on her toys and I can never predict if any given toy will last minutes or months. The goDog stuffies definitely fall into the "months" category, even with rough daily use. Edit: The dragon lasted about 6 months of intensive, hard play before it developed a small tear in the fur. I patched it a couple times, but once my pup discovers a weak spot, it's the kiss of death for any stuffed item. We had to dispose of the dragon (so sad) to keep her from eating any more of the fur. We replaced the dragon with the goDog Chameleon, which is still going strong. I think we will go back to the dragon for our next toy because it's just so darned cute. We gave the dragon to my niece for her golden retriever puppy who is very chew-happy. That dragon is also doing well. You've just gotta love that chew-guard technology. This is one tough toy.
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Reviewed in the United States on September 26, 2015
M
Verified Purchase
Mother of two
Chelsea, US
★★★★★ 5
Precious toy for big dogs too
Size: Large, Color: Skinny Green
Not only is this toy cute and fun, but material is thick and durable even for my crazy GSP who is a destruction artist. This is, the favorite toy his go to in the toy box.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026

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