Hillman Hot Dipped Galvanized Steel 5/16 in. USS Flat Washer, 100-Pack
SKU: 43390678645

Hillman Hot Dipped Galvanized Steel 5/16 in. USS Flat Washer, 100-Pack

Sale price$12.59 Regular price$13.99
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Description

Hillman Hot Dipped Galvanized Steel 5/16 in. USS Flat Washer, 100-Pack5 16 in. Hot Dip Galvanized USS Flat Washers (100 Pack) These Hillman USS flat washers add load distribution and prevent fasteners from biting into wood or metal. Made of steel with a hot dipped galvanized finish, they deliver reliable corrosion resistance for outdoor and marine projects. Key Features: Corrosion Protection: Hot dipped galvanized steel resists rust in outdoor and marine environments Load Distribution: Flat washer design spreads force

5/16 in. Hot-Dip Galvanized USS Flat Washers (100-Pack)

These Hillman USS flat washers add load distribution and prevent fasteners from biting into wood or metal. Made of steel with a hot-dipped galvanized finish, they deliver reliable corrosion resistance for outdoor and marine projects.


Key Features:

  • Corrosion Protection: Hot-dipped galvanized steel resists rust in outdoor and marine environments
  • Load Distribution: Flat washer design spreads force to protect surfaces and strengthen joints
  • USS Compatibility: Sized for coarse-thread 5/16 in. bolts and screws
  • Bulk Value: 100-pack for jobsite efficiency and replenishment
  • Durable Construction: Steel build maintains clamping force under heavy use

Specifications Table:

Specification Details
Material Steel
Finish Hot Dipped Galvanized
Washer Type Flat
Standard USS (coarse thread compatibility)
Size 5/16 inch
Number in Package 100 pack
Packaging Type Boxed
Inch/Metric Inch

Frequently Asked Questions (FAQ):

Q: What bolt size are these washers for?
A: They are designed for use with 5/16 in. coarse-thread (USS) bolts and screws.


Q: Can these be used outdoors?
A: Yes. The hot-dipped galvanized finish provides strong corrosion resistance suitable for outdoor applications.


Q: Are these metric or inch sized?
A: Inch sized (USS standard).


Q: What is included in the package?
A: A boxed 100-pack of 5/16 in. USS flat washers.


Q: Do these work with fine-thread hardware?
A: They are intended for USS coarse-thread bolts; match washers to the hardware standard you’re using for best results.


Industrial Strength, Effortless Finish

The galvanic sheen of these flat washers brings a refined, utilitarian beauty to exposed hardware moments. Their hot-dipped finish offers a rugged texture that complements raw woods and weathered metals. Style them with blackened bolts on cedar or concrete for a crisp, architectural detail. A small component with big impact—essential for enduring, luxe outdoor installations.


Equip your project with corrosion-resistant confidence—add this 100-pack of Hillman 5/16 in. galvanized flat washers 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: 43390678645

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Agatha Marie
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★★★★★ 5
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I want the company COOFANDY and the customers who are considering buying these men's wrinkle free men's shirts for casual business wear, to know that the shirts are beautiful. The material is perfect, and they are made exceptionally well! One of the two shirts that I bought for my husband looks great on him. I had to buy one in a size 2x and one in a size 3x due to the reviews on Amazon's website, where so many of the reviewers stated that the size that they bought ran too small, while other reviewers said the shirt runs too large. My husband tried on the 2x, and it fit him perfectly, which was great because he always wears a 2x. The reason that I am returning them both is that these shirts are tuck-in shirts, and my husband only wears shirts that do not have to be tucked in, such as straight-bottom shirts. I showed him the picture of the shirt in the ad to prove that the models wore them out, not tucked in, but he said the style is wrong for wearing this shirt on the outside, and that he would not be able to wear it. I am so sorry, but I had to return them as he would not ever wear them. But I wanted you, COOFANDY, and your customers to know that the shirts are well worth the money and are just beautiful!
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Missy Davis England
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Perfect fit for my husband
Color: Army Green, Size: Large
Very thick but it's cool, comfortable, no shrinking when washed and no fading. Love this color and the quality of material for the price is top of the line. I will be ordering other colors. My husband really enjoys wearing this and it fits perfectly. Thank you for the excellent work.
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Reviewed in the United States on May 3, 2026
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B House
Lexington, US
★★★★★ 4
Stylish, Well-Made Shirt—Just Might Need a Touch of Ironing
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Why did you pick this product vs others?: My husband is a big fan of this shirt brand—they offer a great selection of styles, patterns, and fabrics, and the availability of a 3XL is a major win since it’s not easy to find that size. This particular shirt has a classy, lightweight feel with a subtle checkerboard texture that adds visual interest under the light. The fit is modern and breathable, perfect for summer wear. After washing it straight out of the package, the wrinkles from shipping didn’t fall out, so I wouldn’t call it truly wrinkle-resistant just yet. I’m hopeful that a single pass with the iron will help set it right. Overall, the shirt looks fantastic and the quality is impressive, especially for the price. Whether for a casual day or dressed up for an event, it’s a versatile choice—just be prepared to give it a little extra TLC after washing.
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Reviewed in the United States on July 5, 2025
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L. Anderson
Los Angeles, US
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Excellent value for your money
Color: Navy Blue-square, Size: X-Large
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J.J.
Draper, US
★★★★★ 5
Looks great and no need to iron
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