SKU: 10607093142

Hillman 5/16 in. x 2-1/2 in. Zinc-Plated Steel Carriage Bolt, 100-Pack

Sale price$30.59 Regular price$33.99
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Description

Hillman 5/16 in. x 2-1/2 in. Zinc-Plated Steel Carriage Bolt, 100-Pack5 16 in. x 2 1 2 in. Zinc Carriage Bolts (100 Pack) These Hillman carriage bolts fasten a wood face to wood or metal while providing a smooth, low profile domed head. Zinc plated steel offers moderate corrosion resistance, ideal for indoor or sheltered outdoor projects. Key Features: Multi Material Use: Fastens wood to wood or metal for versatile builds and repairs Low Profile Head: Smooth, domed head delivers a semi flush, snag free finish Washer

5/16 in. x 2-1/2 in. Zinc Carriage Bolts (100-Pack)

These Hillman carriage bolts fasten a wood face to wood or metal while providing a smooth, low-profile domed head. Zinc-plated steel offers moderate corrosion resistance, ideal for indoor or sheltered outdoor projects.


Key Features:

  • Multi-Material Use: Fastens wood to wood or metal for versatile builds and repairs
  • Low-Profile Head: Smooth, domed head delivers a semi-flush, snag-free finish
  • Washer-Free Locking: Square shoulder grips material to prevent bolt spin during tightening
  • Corrosion Resistance: Zinc-plated steel provides moderate protection against rust
  • Project-Ready Pack: 100 pieces sized 5/16 in. diameter x 2-1/2 in. length

Specifications Table:

Specification Details
Diameter 5/16 in.
Length 2-1/2 in.
Thread 5/16-18 (coarse)
Material Steel
Finish Zinc-plated
Head Type Domed carriage head
Shoulder Square shoulder locks into material
Package Quantity 100 pieces per retail package
Intended Use Fasten a wood face to wood or metal
Pre-Drilling Recommended; hole size to match bolt diameter

Frequently Asked Questions (FAQ):

Q: Do I need to pre-drill?
A: Yes. Drill a hole matching the 5/16 in. bolt diameter for best results.


Q: Are nuts and washers included?
A: This listing is for carriage bolts only; nuts/washers are typically sold separately.


Q: Can these be used outdoors?
A: Zinc plating offers moderate corrosion resistance and is suitable for indoor or sheltered outdoor use; for harsh outdoor environments, consider hot-dipped galvanized or stainless steel.


Q: What tools are needed for installation?
A: Insert the bolt through the pre-drilled hole; hold the domed head in place as the square shoulder bites, then tighten a matching nut with a wrench from the opposite side.


Q: What is the thread size?
A: These are 5/16 in. diameter bolts; the box image indicates 5/16-18 coarse threads.


Streamlined Hardware with a Purposeful, Polished Finish

A row of these domed carriage heads reads as clean, quiet jewelry for utilitarian woodwork. The softly rounded profile sits nearly flush, taming visual noise while adding a subtle glint of zinc. Use them to unify benches, garden carts, or utility shelving for a cohesive, crafted look. Simple, sturdy, and impeccably neat—an easy essential for elevated everyday builds.


Equip your next project with these durable zinc carriage bolts for a clean, secure, and professional finish—add the 100-pack to your cart now.

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: 10607093142

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francisco vazquez
Lowell, US
★★★★★ 4
mediocre at best
it was just alright
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Reviewed in the United States on March 29, 2026
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Kozo O
Houston, US
★★★★★ 5
You should change cabin air filter by yourself.
Do not let your dealership overcharge you for the work they did not perform. Use this to change cabinets air filter yourself. I noticed that my old cabin air filter was used both sides when I pulled it out to install this one. Not cool. I think this cabin air filter works as expected and air quality is definitely improved shortly after installation.
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Reviewed in the United States on June 1, 2025
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M. Tuck
Port Orchard, US
★★★★★ 5
Easy to install, fits great, money saver!
Easy to install, just as expected! Fit great and so much cheaper than having the mechanic shop do it!
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Reviewed in the United States on February 20, 2026
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TroyBoy419
Cuba, US
★★★★★ 5
Good quality and price
Cheaper than autozone, and it arrives to my front door. Very easy to install, since I am not familiar doing very many things to my car, but youtube showed me, and 2 minutes later, it was done.
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Reviewed in the United States on August 4, 2025
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Amazon Customer
Pawtucket, US
★★★★★ 5
Great price, easy install
OEM fit and very easy to install. No issues at all — everything worked exactly as expected.
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Reviewed in the United States on November 19, 2025

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