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KANSPHY

3/8" x 7/8" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4" ID x 0.866" OD x 0.078" Thick(50Pcs)

  • Based on 278 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Aug 24
Order within 11 hours and 33 minutes
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Features

  • Flat washer inside diameter: 0.4 Inch, Outside Diameter: 0.866 Inch.Thickness: 0.078 Inch
  • Material: Made of 304 Stainless Steel for increased corrosion resistance. Perfect for indoor and outdoor use
  • These washers fit 3/8 and M10 bolts perfectly
  • Flat washer are used to distribute loads of threaded bolts, screws and nuts, provide a smooth-bearing surface
  • Package includes 50Pcs Flat Washers. Color: Silver tone.

Material: Stainless Steel


Outside Diameter: 0.875 inches inches


Washer Type: Flat


Exterior Finish: Stainless Steel


Fastener Size: 3/8


Outside Diameter: 0.875 inches inches


Fastener Size: 3/8


Item Thickness: 0.08 inches


Size Name: 0.875 inches


Item Weight: 195 g


Number of Pieces: 50


Item Dimensions: 0.87 x 0.87 x 0.08 inches


Item Diameter: 0.88 inches


Compatible Groove Diameter: 0.4 inches


Material Type: Stainless Steel


Exterior Finish: Stainless Steel


Metal Type: Stainless Steel


Finish Types: Stainless Steel


Brand: KANSPHY


UPC: 747165215787


Manufacturer: KANSPHY


Unit Count: 1 Count


Fastener Type: Flat Washer


Model: FTWAM10-22


Number Of Items: 1


Part Number: FTWAM10-22


Washer Type: Flat


Screw Head Style: Flat


Grade Rating: Grade 8


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Exactly What I Needed – Tough, Reliable, and Rust-Free! 🛠️🔩💧
These 3/8" x 7/8" stainless flat washers have been a fantastic addition to my hardware stash. I’ve used them on a few outdoor and garage projects already, and I couldn’t be more pleased. The 18-8 stainless steel feels super solid and has held up beautifully, even in damp or weather-exposed areas—no signs of rust at all! 🌧️💪 The inner and outer diameters are spot on, and they seat perfectly with standard 3/8" bolts. Everything is machined clean with no rough edges or warping, and the uniform thickness gives me great peace of mind when tightening things down. 🧰⚙️ I’ve used a handful already on my deck railing and car parts, and every one has done its job with no bending or slipping. It’s a great value for 50 pieces, and the quality easily beats out some washers I’ve paid more for in-store. Definitely keeping these stocked in my shop! 🔩📦👏 ... show more
Reviewed in the United States on July 8, 2025 by David Houck
    • They’re washers… and they do washer things
Not much to say here—they’re washers, and they work exactly like washers should. Fit was right, quality seems fine, and they did the job without any issues. Sometimes simple is all you need.
Reviewed in the United States on May 1, 2026 by Joel
    • Quality item
Just as advertised. Fast shipping, great value.
Reviewed in the United States on April 10, 2026 by Amazon Customer
    • No complaints
As advertised
Reviewed in the United States on July 11, 2026 by jeff poppen
    • High quality!
High quality! Thanks!
Reviewed in the United States on April 14, 2026 by Jeff Bramlett
    • Arandela
Bueno
Reviewed in the United States on April 23, 2026 by Mendez
    • They're washers, what could go wrong?
What and you say about washers? They are the right size, shiny, and wee delivered quickly.
Reviewed in the United States on February 26, 2026 by Al from FL
    • nice washers, exactly as expected.
Cheaper, easier to get, than big box stores and even cheaper than the cheapest place local i can get them. I use these on cable railing rail post mounts along with large stainless bolts through the rim joist and additional blocking. These prevent the nut getting buried in the wood.
Reviewed in the United States on December 11, 2024 by customer review

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