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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Amy G.
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★★★★★ 4
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Color: Gold Triple Huggie
Great for the price. Good is a good color. They are a little hard to clip.
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Reviewed in the United States on October 5, 2024
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Reviewed in the United States on February 11, 2025
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Elsa Hernandez
Draper, US
★★★★★ 5
Beautiful Sunflower necklace
Color: M
It was beautiful my daughter loved it. A gift for her Mother’s Day and she loves sunflowers.
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Reviewed in the United States on May 24, 2026
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Thassia y Joshua
Louisville, US
★★★★★ 5
Necklace
Color: E
Very cute and delicate
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Reviewed in the United States on May 31, 2026
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Tif Rod
Belleville, US
★★★★★ 5
Cute necklace will be in high rotation
Color: T
I absolutely love this sunflower initial necklace! The moment I put it on, I could tell this was going to be a special piece in my jewelry collection. The combination of the delicate sunflower charm with the heart-shaped initial "T" is just stunning – it's feminine without being overly fussy, and the design feels both modern and timeless. I bought this as a gift for my sister-in-law, and she was genuinely touched by how thoughtful and beautiful it is. The white gold plating gives it an elegant shine that catches the light beautifully, and it's substantial enough to feel like quality jewelry while still being comfortable for everyday wear. The necklace itself is well-crafted with attention to detail – the sunflower petals have a lovely texture, and the initial letter sits perfectly within the heart shape. The chain length is ideal for layering with other necklaces or wearing alone, and it sits right at that perfect spot on your collarbone. I've been wearing mine regularly for a few weeks now, and the plating has held up wonderfully with no tarnishing or color changes. The clasp is secure and easy to manage on your own, which I really appreciate since I wear it daily. The style strikes that perfect balance between special occasion jewelry and something you can throw on with jeans and a sweater. I recommend this product because it's a genuinely well-made piece that feels personal and meaningful while being durable enough for regular wear.
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Reviewed in the United States on March 19, 2026

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