Hillman 5/16 in. x 2-1/2 in. Stainless Steel Carriage Bolt, 25-Pack
SKU: 47864549668

Hillman 5/16 in. x 2-1/2 in. Stainless Steel Carriage Bolt, 25-Pack

Sale price$34.19 Regular price$37.99
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Hillman 5/16 in. x 2-1/2 in. Stainless Steel Carriage Bolt, 25-PackStainless Steel Carriage Bolts, 5 16 in. x 2 1 2 in. (25 Pack) Durable Hillman stainless steel carriage bolts designed for fastening wood to wood or metal with a clean, semi flush finish. The square neck locks into place to prevent spinning, and stainless construction resists rust for long lasting outdoor performance. Key Features: Rust Resistant Stainless Steel: Superior corrosion protection for outdoor and marine applications Self Locking Square

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

Durable Hillman stainless steel carriage bolts designed for fastening wood to wood or metal with a clean, semi-flush finish. The square neck locks into place to prevent spinning, and stainless construction resists rust for long-lasting outdoor performance.


Key Features:

  • Rust-Resistant Stainless Steel: Superior corrosion protection for outdoor and marine applications
  • Self-Locking Square Neck: Prevents bolt spin during installation for easier fastening
  • Smooth Domed Head: Creates a semi-flush finish and eliminates the need for a washer under the head
  • Coarse Thread SAE: Reliable grip in wood and metal framing
  • Convenient 25-Pack: Boxed C-Pak for efficient project and jobsite use

Specifications Table:

Specification Details
Brand Name Hillman
Material Stainless Steel
Diameter 5/16 inch
Length 2-1/2 inch
Thread Type Coarse
Unit of Measurement SAE
Number in Package 25 pack
Packaging Type Boxed
Head Style Domed carriage head
Neck Style Square neck, self-locking

Frequently Asked Questions (FAQ):

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


Q: Do I need a tool to hold the head during installation?
A: No. The square neck under the domed head locks into the material to prevent spinning.


Q: Are these suitable for outdoor use?
A: Yes. Stainless steel provides superior rust prevention, ideal for outdoor and damp environments.


Q: How many bolts come in the package?
A: 25 bolts per retail package.


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


A Sleek, Polished Fastener for Clean, Modern Builds

The domed head and streamlined silhouette bring a refined, unobtrusive detail to decks, benches, and custom millwork. Stainless steel lends a luminous, architectural finish that pairs beautifully with natural woods. Use them to create crisp, flush surfaces where hardware should whisper, not shout. These bolts are the quiet luxury essential for enduring outdoor craftsmanship.


Choose Hillman stainless carriage bolts for a clean finish and rust-proof strength—perfect for 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: 47864549668

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Ramirez
Phoenix, US
★★★★★ 5
Simply
Size: 300A
Nice quality
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Reviewed in the United States on October 3, 2025
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Geekinthenight
Massapequa, US
★★★★★ 5
Great price and nice quality
Size: 300A
Great price and nice quality
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Reviewed in the United States on September 26, 2024
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RMMcIntosh
Charlottesville, US
★★★★★ 4
Great price, but don't stack multiple wires
Size: 300A
I used this as a junction point on a 1 gauge wire. I added an 8 gauge wire to one side, and the cover would not seat. I had to bend and maneuver the ring terminals to make the cover catch. For the price of the items, if used without any secondary wires attached and interior use only, this is an unbeatable deal.
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Reviewed in the United States on January 30, 2026
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Joe M. Blair
Grantham, US
★★★★★ 5
Great Quality
Size: 300A
Exactly what I needed. Good quality and worked perfectly.
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Reviewed in the United States on May 21, 2025
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Junior
Alexandria, US
★★★★★ 5
Great
Size: 300A, Size: 300A
Easy to install works great and really good quality and clean looking
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Reviewed in the United States on February 24, 2025

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