SKU: 76513949889

Hillman 5/16 in. Diameter x 3 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screws, Coarse Thread, 100-Pack

Sale price$53.99 Regular price$59.99
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Description

Hillman 5/16 in. Diameter x 3 in. Length Grade 5 Heat-Treated Zinc Steel Hex Head Cap Screws, Coarse Thread, 100-PackHillman Grade 5 Hex Head Cap Screws, 5 16 in. x 3 in., 100 Pack These Hillman Grade 5 hex head cap screws deliver reliable fastening strength for heavy duty projects. Made of heat treated zinc plated steel with coarse threads, theyre ideal for securing machinery, automotive, and structural components. The washer face under the head provides a better seal and load distribution. Key Features: Heavy Duty Strength: Grade 5 heat treated steel withstands

Hillman Grade 5 Hex Head Cap Screws, 5/16 in. x 3 in., 100-Pack

These Hillman Grade 5 hex head cap screws deliver reliable fastening strength for heavy-duty projects. Made of heat-treated zinc-plated steel with coarse threads, they’re ideal for securing machinery, automotive, and structural components. The washer face under the head provides a better seal and load distribution.


Key Features:

  • Heavy-Duty Strength: Grade 5 heat-treated steel withstands demanding loads
  • Corrosion Resistant: Zinc finish helps protect against rust and wear
  • Secure Fit: Coarse thread for strong grip in tapped holes with nuts
  • Better Seal: Washer face under the head improves load distribution
  • Convenient Bulk Pack: 100 screws sized 5/16 in. diameter x 3 in. length

Specifications Table:

Specification Details
Brand Name Hillman
Material Steel
Finish Heat Treated Zinc
Grade 5
Diameter 5/16 inch
Length 3 inch
Thread Type Coarse (USS)
Head Type Hex head with washer face
Number in Package 100
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: Are these fully or partially threaded?
A: They are partially threaded along the shank, typical of Grade 5 hex cap screws.


Q: What tools are needed for installation?
A: Install with a wrench or socket; a drill with the appropriate driver can be used for faster assembly.


Q: Can these be used outdoors?
A: The zinc finish offers basic corrosion resistance suitable for many indoor and some outdoor applications; for harsh environments, consider stainless or hot-dip galvanized fasteners.


Q: What thread type do they use?
A: Coarse thread (USS) for strong engagement and easier assembly.


Q: Do they include nuts or washers?
A: No, this pack includes only hex head cap screws; purchase compatible nuts and washers separately.


Industrial polish with steadfast performance

These hex cap screws bring a crisp, engineered clarity to any build, marrying strength with a clean zinc sheen. The faceted hex head and washer face read as purposeful detailing—perfect for exposed hardware moments. Pair them with matte black brackets or raw oak to underscore a refined, utilitarian aesthetic. Essential hardware that anchors spaces with confidence and quiet luxury.


Secure your projects with Grade 5 strength—add this 100-pack of Hillman hex cap screws 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: 76513949889

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4.7 ★★★★★
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Verified Purchase
hgo
Dallas, US
★★★★★ 5
Made well. Quality product.
Size: 9.25 Inch, Number of Items: 6
Great quality, very sturdy. Bought and tried others that were inferior. Will be purchasing more of these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 21, 2025
M
Verified Purchase
Megan L Von Urff
Belleville, US
★★★★★ 5
Sturdy, great quality!
Size: 7.25 Inch, Number of Items: 6, Size: 7.25 Inch, Number of Items: 6
The brackets were exactly what I had in mind, and at a much more affordable price than Home Depot. They are sturdy and look amazing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2024
A
Verified Purchase
Amy
West Palm Beach, US
★★★★★ 4
Nice brackets
Size: 11.25 Inch, Number of Items: 8, Size: 11.25 Inch, Number of Items: 8
The brackets look great and fit a 1x12 board perfectly. They've been installed for a few days and seem to be sturdy. So far, the only negative is the hardware, as other reviewers have mentioned. Initially, I had some trouble locating the stud and decided to use the drywall anchors. I got one bracket installed and the anchor was already pulling out of the wall. Overall, I think the brackets are great, but just use your own screws and drywall anchors (if needed).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2023
C
Verified Purchase
C. Hag
Battle Creek, US
★★★★★ 5
Strong brackets
Size: 9.25 Inch, Number of Items: 8
Solid and sturdy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
J
Verified Purchase
John Allmon
Fort Morgan, US
★★★★★ 5
Well made. Sturdy.
Size: 7.25 Inch, Number of Items: 6, Size: 7.25 Inch, Number of Items: 6
I bought these for an alcove. The brackets came in great condition. I didnt notice any scratched. Mounting… the brackets are not centered on the wall, but are centered on the studs. I cant do anything about the stud placement. I bought a 2x8x10 board and cut it into 40 in sections. After placing the brackets on the wall the boards fit beautifully in place. (I used the long stud screws that came with the brackets) I havent screwed the boards to the wall (those screws also included) and may not. I like being able to pull a board out and run cables behind, if needed. I think the boards are sturdy enough that I wont have an issue with tipping, since the right most stud is at the corner of the wall.
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Reviewed in the United States on September 13, 2022

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