SKU: 35188056748

Hillman 5/16 in. Diameter x 4 in. Length Zinc-Plated Steel Hex Bolt, 50-Pack

Sale price$48.83 Regular price$54.26
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Description

Hillman 5/16 in. Diameter x 4 in. Length Zinc-Plated Steel Hex Bolt, 50-PackHillman 5 16 in. x 4 in. Zinc Plated Hex Bolt (50 Pack) Durable Grade 2 steel hex bolt set with a corrosion resistant zinc plated finish for general fastening applications. Each 5 16 in. diameter by 4 in. length bolt features partial threading for secure assembly in wood, metal, and construction projects. Key Features: Corrosion Resistant: Zinc plated steel helps prevent rust for indoor outdoor general use. Reliable Strength: Grade 2 steel suitable

Hillman 5/16 in. x 4 in. Zinc-Plated Hex Bolt (50-Pack)

Durable Grade 2 steel hex bolt set with a corrosion-resistant zinc-plated finish for general fastening applications. Each 5/16 in. diameter by 4 in. length bolt features partial threading for secure assembly in wood, metal, and construction projects.


Key Features:

  • Corrosion Resistant: Zinc-plated steel helps prevent rust for indoor/outdoor general use.
  • Reliable Strength: Grade 2 steel suitable for non-critical structural fastening.
  • Standard Thread: 5/16"-18 coarse thread fits common nuts and pre-tapped holes.
  • Convenient Value Pack: 50-count box for stocking the shop or jobsite.
  • Versatile Applications: Ideal for machinery, furniture assembly, and construction projects.

Specifications Table:

Specification Details
Diameter 5/16 in.
Length 4 in.
Thread Size 5/16"-18
Head Type Hex
Material Steel
Grade Grade 2
Finish Zinc Plated
Pack Quantity 50
Color Gray
Recommended Use General Use

Frequently Asked Questions (FAQ):

Q: What is the thread size and pitch?
A: These bolts are 5/16"-18 coarse thread.


Q: Are these fully threaded?
A: No, they are partially threaded with a smooth shank section and threaded end.


Q: What grade are the bolts?
A: Grade 2 steel, suitable for general-purpose fastening.


Q: Can these be used outdoors?
A: The zinc-plated finish offers basic corrosion resistance; for harsh outdoor or marine environments, consider hot-dip galvanized or stainless steel.


Q: How many bolts are included?
A: 50 bolts per box.


Crisp Hardware That Quietly Elevates the Build

There’s a satisfying clarity to a polished hex bolt—clean lines, confident proportion, and a gleam that punctuates joinery with intention. The zinc-plated finish brings a subtle sheen that complements both raw timber and painted steel. Use these 4-inch bolts to create tailored, architectural moments in exposed hardware benches or utility shelving. It’s that refined, reliable detail that makes everyday construction feel effortlessly luxe.


Stock your shop with this 50-pack of Hillman hex bolts and tackle your next build with dependable, corrosion-resistant fastening.

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: 35188056748

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M. Del
Massapequa, US
★★★★★ 5
Good stuff
Size: 50 sqft, Size: 50 sqft
Good stuff. I did a lot of work on my 91 Toyota Land Cruiser 3FE. I did the inside and outside doors, as well as the under-hood area, with some extra work. I like this stuff. It sticks down good but you have to clean your surface so there's a good grip. I think these are going to do well for noise cancellation. The deadening material does well with absorbing vibrations too. But the install roller tools it will come in handy. Trust me trying to do it by hand is not worth it.
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Reviewed in the United States on June 6, 2026
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Charlie J
Phoenix, US
★★★★★ 4
Good quality
Size: 10 sqft
I wish it was a little better but it definitely works great and look good for how cheap it is
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Reviewed in the United States on January 23, 2026
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R. Selberg
Lake Worth, US
★★★★★ 5
Works well
Size: 10 sqft
Worked great at a budget price. I used it to damp a fiberglass loudspeaker horn. Easy to work with too.
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Reviewed in the United States on May 8, 2026
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Devan
Massapequa, US
★★★★★ 5
Good material but bites back
Size: 20 sqft
Very good product for my rear trunk and backseat on my mustang. I would recommend some type of gloves due to the foil itself when placing down will cut up your hands and fingers. Overall good product for its price.
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Reviewed in the United States on May 23, 2026
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Donnie
Alexandria, US
★★★★★ 5
Great product for the price
Model: 197mil 31 sqft Car Sound Deadening Mat, Model: 197mil 31 sqft Car Sound Deadening Mat
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Reviewed in the United States on May 29, 2026

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