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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★★★★★ 5
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Reviewed in the United States on December 10, 2025
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Oliver Ta
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★★★★★ 5
Holds up
Size: 3 Fl Oz (Pack of 2), Style: SPF 30, Size: 3 Fl Oz (Pack of 2), Style: SPF 30
Reliable, long-lasting protection. I’ve used this for workouts, beach days, and long hours outside, and it holds up really well. It absorbs quickly, and actually stays on when you sweat. Great value for the size and performance. Definitely a go-to sunscreen for active days. I like the small size. It is easily portable.
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Amy Sarah
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★★★★★ 5
Shear and effective. Excellent!
Size: 3 Fl Oz (Pack of 2), Style: SPF 30
Shear, effective. Excellent.
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Reviewed in the United States on May 3, 2026
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Cuba, US
★★★★★ 4
TSA approved but…
Size: 3 Fl Oz (Pack of 2), Style: SPF 30
I’m not super picky when it comes to sunscreen and I needed a sunscreen that would be TSA approved. This fit the bill and didn’t break the bank (getting a 2 pack is nice as well). However, I find that this sunscreen just underperformed for me. It could be that I should up the SPF factor but when using my usual brand their 30 works a bit better than Banana Boat’s version. I wouldn’t say that this product is useless because it did prevent burning in certain areas but I still burned a bit in other areas. However, this could be my fault. I was outside for about an hour with 9 UV rays in a bikini in the California sun. I will say that I did reapply before 2 hrs so I’m just a little bit let down that it didn’t quite perform a bit better. But again, could be user error and perhaps just be really particular about your application technique. If you’re in a pinch, go for it but I’d honestly even recommend upping your SPF factor if you are set on Banana Boat’s while still meeting the TSA sizing requirement. Smells good though and isn’t the stickiest compared to some of the other brands!
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Dennis King
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Good product
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