Is this solid copper or copper plated?

I know that that they are solid and not plated because I sacrificed a few with the grinder to make sure. :-) Note that "solid/not plated" and "solid copper" are somewhat different questions. One would need to perform a chemical analysis to determine whether they are "solid copper" or "solid copper alloy of some sort." They are nicely formed and behave like copper; that is good enough for me.

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HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit

HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit

Product ID: 131992613

Details

Exterior Finish
Copper
Fastener Size
M6
Material
Copper
Outside Diameter
26 Millimeters
Washer Type
Flat

⚡Superior electrical conductivity

🔥High heat & corrosion resistance

🛠️150PCS versatile sizes

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3789 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

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Description

⚙️ Seal the deal with copper precision – don’t get left leaking behind!

MULTI INDUSTRY READY - Ideal for automotive, marine, electrical, and hydraulic fittings—be ready for anything
SMOOTH SURFACE FINISH - Reduces friction and prevents leaks, loosening, and pressure dispersion effortlessly
PREMIUM COPPER MATERIAL - Outperforms steel & rubber with unmatched heat resistance and corrosion protection
VALUE PACKED CONVENIENCE - A must-have kit that saves time and money by covering all common sealing applications
COMPLETE 8 SIZE ASSORTMENT - 150 precision copper washers from M6 to M20 for every project need

This HELIFOUNER Copper Washers Assortment Kit includes 150 flat washers in 8 metric sizes (M6 to M20), crafted from high-quality copper for superior heat resistance, corrosion protection, and electrical conductivity. Designed for seamless installation, these washers reduce friction and prevent leaks across automotive, marine, electrical, and hydraulic applications, making it the ultimate all-in-one sealing solution for professionals and DIYers alike.

Specifications

ASIN	B07H299LZM
Best Sellers Rank	#40,230 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #227 in Flat Washers
Brand	HELIFOUNER
Customer Reviews	4.7 4.7 out of 5 stars (531)
Exterior Finish	Copper
Fastener Size	M6
Fastener Type	Flat Washer
Finish Types	Copper
Item Diameter	6 Millimeters
Item Thickness	1 Millimeters
Item Weight	0.25 Kilograms
Manufacturer	HELIFOUNER
Material Type	Copper
Metal Type	Copper
Model	SLKRWASHER-COPPER--150P
Number of Pieces	150
Outside Diameter	26 Millimeters
Part Number	SLKRWASHER-COPPER--150P
Screw Head Style	Flat
Size Name	Assorted (8 Sizes)
UPC	781573059465
Unit Count	1 Count
Washer Type	Flat

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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3789 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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