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🔩 Seal the deal with copper precision – never settle for leaks again!
This 330-piece copper washer assortment offers 12 sizes (M5-M20) of flat sealing crush washers designed for automotive, plumbing, and mechanical use. Crafted from high-quality copper, these washers provide superior corrosion resistance, heat dissipation, and load distribution to ensure leak-proof seals. Packaged in a durable, organized case, this kit is perfect for professionals and DIYers seeking reliable, versatile sealing solutions.
| ASIN | B0DJPB3821 |
| Best Sellers Rank | #2,614 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Flat Washers |
| Brand | Magicave |
| Color | Copper Washers-330Pcs |
| Customer Reviews | 4.6 4.6 out of 5 stars (406) |
| Exterior Finish | Plain |
| Fastener Size | M5, M6, M8, M10, M12, M14, M16, M20 |
| Fastener Type | Washer |
| Finish Types | Plain |
| Grade Rating | Heavy Duty |
| Item Thickness | 1 Millimeters |
| Item Weight | 0.5 Pounds |
| Manufacturer | Magicave |
| Material Type | Copper |
| Metal Type | Copper |
| Model | Copper Washers |
| Number Of Items | 330 |
| Number of Pieces | 330 |
| Outside Diameter | M5, M6, M8, M10, M12, M14, M16, M20 Inches |
| Part Number | M5 M6 M8 M10 M12 M14 M16 M20 |
| Screw Head Style | Flat |
| Set Name | 330 Pcs Copper Washers Assortment Kit |
| Size Name | M5, M6, M8, M10, M12, M14, M16, M20 |
| Thread Size | M5, M6, M8, M10, M12, M14, M16, M20 |
| Unit Count | 330.0 Count |
| Washer Compatibility | metric bolts |
| Washer Type | Flat |
P**A
Copper washers
Great product great quality
J**E
Premium Copper Washers
This copper washer kit is exactly what I’ve been needing for a while. It comes with a wide variety of sizes, and every single one I’ve used so far has fit perfectly—no leaks, no hassle. Whether I’m working on brake lines, oil drain plugs, or other small engine repairs, there’s always a washer in the kit that fits the job. The copper is high-quality and has a good thickness—not the kind that bends too easily or crushes unevenly. Everything came organized in a sturdy plastic case, which makes it easy to find the right size quickly. Honestly, if you’re a DIYer or mechanic, this kit is a no-brainer. Super convenient, reliable, and a great value for the price. I’ll definitely be grabbing another one when I run low.
S**Y
Great price, little thin but seems to work.
Only needed two, but the price of two at Napa was the same price this entire kit. The only thing that I will say about these that I don't love is the thickness. If you're using these as a crush washer for brake lines they work, but they certainly don't have the thickness that a typical crush washer would. I don't know if this will cause issues long-term but I thought it was worth mentioning.
M**C
Great value
Great value product. Lots of sizes for various bolts or projects. Thinner than other brands. The price was great for the number of pieces enclosed.
P**H
WASHER ASSORTMENT
NICE PRODUCT
S**H
Quality kit, decent case.
I use these more than I would have ever expected to. Great kit.
J**N
Works great
Cant beat the price, ive used dozens of them and no problems.
R**A
Recommend
Good price, good selection and sizes.
A**R
Perfect, as described and all sizes possibly needed.
Trustpilot
2 weeks ago
1 week ago