SKU: 99123099542

Hillman 5/16 in. x 3 in. Zinc-Plated Steel Hex Bolt, Grade 5 — 100 Pack

Sale price$35.09 Regular price$38.99
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Description

Hillman 5/16 in. x 3 in. Zinc-Plated Steel Hex Bolt, Grade 5 — 100 PackHillman Zinc Plated Grade 5 Hex Bolt, 5 16 in. x 3 in. (100 Pack) Durable Grade 5 hex bolts for general fastening in wood, metal, and composite projects. Zinc plated steel resists corrosion and features a partially threaded shank for strong clamping power. Key Features: Corrosion Resistant Zinc Plating: Helps protect against rust for long lasting performance Grade 5 Strength: Heat treated steel provides dependable holding power for general

Hillman Zinc-Plated Grade 5 Hex Bolt, 5/16 in. x 3 in. (100-Pack)

Durable Grade 5 hex bolts for general fastening in wood, metal, and composite projects. Zinc-plated steel resists corrosion and features a partially threaded shank for strong clamping power.


Key Features:

  • Corrosion-Resistant Zinc Plating: Helps protect against rust for long-lasting performance
  • Grade 5 Strength: Heat-treated steel provides dependable holding power for general construction
  • Partially Threaded Shank: Enhances grip and reduces shear movement between materials
  • Hex Cap Head: Accepts higher torque for secure installations with wrenches or sockets
  • Coarse 5/16"-18 Threads: Matches standard nuts and washers for straightforward assembly

Specifications Table:

Specification Details
Material Steel
Finish Zinc-plated
Color/Finish Silver
Head Type Hex
Diameter 5/16 in
Length 3 in
Thread Type Coarse
Thread Pitch 5/16"-18
Full Thread No (partially threaded)
Grade 5
Unit of Measure Count
Package Quantity 100
Measure Type Standard (SAE)

Frequently Asked Questions (FAQ):

Q: Are these bolts fully threaded?
A: No. They feature a partially threaded shank for improved clamping strength.


Q: What nut and washer grade should I use?
A: Use Grade 5 nuts and washers to match the bolt’s strength.


Q: What drill size is needed for installation?
A: Drill a hole matching the bolt diameter—5/16 inch.


Q: Can these be used outdoors?
A: Yes, the zinc plating offers corrosion resistance; however, for harsh or marine environments, consider more specialized coatings.


Q: What thread specification do these bolts have?
A: Coarse thread, 5/16"-18.


Streamlined Utility with a Polished Edge

These zinc-plated hex bolts bring a clean, silvery finish that elevates exposed hardware moments. The crisp hex head and partially threaded shank lend a tailored, utilitarian elegance to millwork and custom metal projects. Style them with matte black brackets for a chic, mixed-metal narrative. A small detail with big impact—perfect for refined, resilient spaces.


Secure your projects with dependable Grade 5 performance—add this 100-pack of Hillman hex bolts to your cart today.

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: 99123099542

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Zero
West Palm Beach, US
★★★★★ 4
Easy to use
Size: 4 Count (Pack of 1)
Continued use is needed for best results
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Reviewed in the United States on May 14, 2026
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Nicole
Massapequa, US
★★★★★ 5
No sensitivity issues and works!
Size: 4 Count (Pack of 2)
I have what I would consider sensitive teeth and this doesn’t bother them one bit. I have used nightly for about 5 nights and can see a difference in color but again, no pain or sensitivity problems! I would recommend to anyone who asks what product to get for whitening teeth.
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Reviewed in the United States on February 25, 2026
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Julian Barrett
Charlottesville, US
★★★★★ 5
Impressive work...
I've used those whitening kit and it's my first time with something like this. I've done the charcoal toothpaste and working toothpaste and they made small changes to my teeth over a long period of time, but the whitening kit was a bit different. I applied the gel on my teeth and used the LED mouthpiece. There was a small change and a bit of sensitivity in my teeth so I waited a few days for the pain to reduce. I didn't realize that the sensitivity feel for for that very purpose. After a few days I applied another coating and used the sensitivity gel. The results were significant my teeth were two chart shades different. I was very impressed. I would recommend this for whitening your teeth, but if you feel a bit of sensitivity after use, use the sensitivity gel and red light setting on the mouthpiece. It really does help.
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Reviewed in the United States on February 7, 2026
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Chelsea, US
★★★★★ 5
Perfect Match with the WhiteBrite mouth whitener
Size: 4 Count (Pack of 1)
I purchased the White Brite teeth whitener unit & ordered the gel pens to go with it: this review is for the gel - however have to mention the little mouth brighter is AMAZING! Works as well as getting 500$ whitening at dentist! 🦷 … The gel is a perfect match for it…I used continuously for one week - saw a 85/90% Highly recommend the mouth whitener & gel pen!
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Reviewed in the United States on May 17, 2026
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Anjie Kacperski
Pawtucket, US
★★★★★ 5
Bright smile
Size: 4 Count (Pack of 1)
I love this product and its whitening teeth
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Reviewed in the United States on April 15, 2026

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