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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Tammy Lee Morris
Phoenix, US
★★★★★ 1
Don’t waste your money or time!
Color: White, Size: Standard - 4 Panel
Don’t waste your money. The instructions make no sense and the metal poles are either sized wrong for the product or screw holes are incorrectly placed, but no two poles matched in size and placement making it impossible to put this together without the panels being warped. No matter how I tried to switch the poles to see if I had them wrong, they always turned out warped and incorrectly fit. I finally gave up and threw everything out - I wasted $50 on this junk and because I didn’t try to put it together immediately after I bought it, it is way too late for a refund. Lesson learned!
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Reviewed in the United States on October 1, 2025
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Edward Hugee
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★★★★★ 3
Sturdiness
Color: Black, Size: Standard - 4 Panel
Not so sturdy. It worked well for its intended job, but, it has to be secured to the floor for long term use.
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Reviewed in the United States on March 30, 2026
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★★★★★ 5
Hide my hot water heater
Color: Grey, Size: Standard - 4 Panel
I used the divider to hide my hot water heater. It's perfect and looks great
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Reviewed in the United States on April 21, 2026
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Janet Lanier
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★★★★★ 4
Wobbly but Usable
Color: Grey, Size: Standard - 4 Panel
A bit wobbly, but good enough for the price when you need a solid background for remote work calls.
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Reviewed in the United States on May 6, 2026
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Lateefah
Fort Morgan, US
★★★★★ 5
Nice and easy to assemble
Color: Black, Size: Standard - 4 Panel
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Reviewed in the United States on November 7, 2025

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