SKU: 79214034090

Hillman 5/16 in. Diameter x 3-1/2 in. Length Hot-Dipped Galvanized Steel Hex Bolt, Coarse Thread, 50-Pack

Sale price$37.79 Regular price$41.99
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Description

Hillman 5/16 in. Diameter x 3-1/2 in. Length Hot-Dipped Galvanized Steel Hex Bolt, Coarse Thread, 50-PackHillman 5 16 in. x 3 1 2 in. Galvanized Hex Bolts (50 Pack) Durable Grade 2 steel hex bolts with a hot dipped galvanized finish for superior corrosion resistance in outdoor and general purpose applications. Coarse thread, partially threaded shank delivers strong clamping force for wood to wood, wood to metal, or metal to metal fastening. Key Features: Corrosion Resistant Galvanized Finish: Hot dipped zinc coating stands up to outdoor and marine

Hillman 5/16 in. x 3-1/2 in. Galvanized Hex Bolts (50-Pack)

Durable Grade 2 steel hex bolts with a hot-dipped galvanized finish for superior corrosion resistance in outdoor and general-purpose applications. Coarse-thread, partially threaded shank delivers strong clamping force for wood-to-wood, wood-to-metal, or metal-to-metal fastening.


Key Features:

  • Corrosion Resistant Galvanized Finish: Hot-dipped zinc coating stands up to outdoor and marine environments.
  • General-Purpose Strength: Grade 2 steel suitable for most common fastening tasks.
  • Coarse Thread Grip: Partially threaded shank reduces shear movement and improves hold between materials.
  • Versatile Applications: Ideal for wood, metal, and mixed-material assemblies; pair with matching nuts and washers.
  • Bulk Value Pack: 50 bolts per box for convenient stocking on the jobsite or in the shop.

Specifications Table:

Specification Details
Brand Hillman
Finish Hot Dipped Galvanized
Grade Grade 2
Diameter 5/16 inch
Length 3-1/2 inch
Material Steel
Thread Type Coarse (UNC)
Shank Partially threaded
Number in Package 50
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: Are matching nuts and washers included?
A: No. Use nuts and washers of the same grade (Grade 2) and galvanized finish for best results.


Q: Can these bolts be used outdoors?
A: Yes. The hot-dipped galvanized coating provides strong corrosion resistance for exterior use.


Q: What thread type do these bolts have?
A: Coarse thread (UNC).


Q: Do I need to pre-drill holes?
A: Pre-drilling is recommended to ensure proper fit and prevent splitting, especially in wood.


Q: What are the exact dimensions?
A: Diameter: 5/16 inch; Length: 3-1/2 inch; partially threaded shank.


Industrial polish with weatherproof poise

These galvanized hex bolts bring a clean, utilitarian rhythm to outdoor structures and custom furniture alike. I love the subtle sheen of hot-dipped zinc—it feels both rugged and refined. Try them as a deliberate design note on cedar planters or a steel-framed bench, letting the hardware punctuate the composition. They’re the quiet, steadfast detail that elevates everyday builds into enduring luxury.


Outfit your next project with these galvanized hex bolts for reliable, weather-ready fastening that lasts.

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: 79214034090

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William R
Los Angeles, US
★★★★★ 5
Works great, super easy to install
Color: Black
Easy to mount, fits large charger great. Low profile appearance keeps it out of sight, functions perfect for my needs. The thick silicone material is nice and stretchy, thick so it should be durable.
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Reviewed in the United States on May 21, 2026
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STEVE
San Leandro, US
★★★★★ 1
Don’t but this…
Color: Black, Color: Black
The holder came quickly and isn’t that bad but mounts with a huge adhesive backing, which again isn’t;t bad, but it was sent in a plastic bad, like a zip lock bag. The adhesive backing has NO protecvtyive strip on it, so it is covered in lint and debris and was sticking to the bag it was sent in.
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Reviewed in the United States on May 21, 2026
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Andre B
Boise, US
★★★★★ 5
Cable management
Color: Black
Great solution
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Reviewed in the United States on May 12, 2026
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Bisharah Kakish
Pawtucket, US
★★★★★ 4
I just hope it will last for a long time
Color: Black*2
The material is not cheap, I mean it’s a really good silicone! Very easy to use out of the box, and it did fit two of my bricks. All I hope is that it will last for a long time stuck under my desk since I had to stick my bricks upside down.
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Reviewed in the United States on May 26, 2026
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DB
Carnegie, US
★★★★★ 5
Works great. Keeps things nice and tidy.
Color: Black, Color: Black
Works great! I regularly use the end of my dining table as a spot to use my laptop and really wanted a more organized way of keeping the cord tidy. This of course would also easily work on a desk as well It's completely made from a nice stretchy and durable silicone and could accommodate pretty good size chargers. My charger is pretty small so it doesn't fit tightly, but it still works perfectly. It's also super easy to install. The reverse side of this has really strong adhesive to hold onto whatever flat surface you attach it to. Mine is adhered to the underside of a wood table and so far it doesn't appear to have any issues with it. I should mention that since it's held on by adhesive, it's not something you can easily move after installed, so put it where you want it to permanently be. That said, for the price you can easily get a second or a third one if you need it in multiple locations. Overall, it works great and it really keeps my laptop charger off the floor and everything is nice and tidy.
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Reviewed in the United States on October 12, 2025

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