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 conductivity

🔥High heat resistance

🛠️150PCS versatile sizes

R578

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

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Description

⚙️ Upgrade your toolkit with copper precision – seal the deal like a pro!

MULTI INDUSTRY READY - Perfect for automotive, marine, electrical, and household applications.
ALL IN ONE COPPER KIT - 150 precision washers across 8 metric sizes to fit every project.
SEAMLESS SEAL SAFETY - Smooth surface design reduces friction, prevents leaks, and secures connections.
EFFORTLESS INSTALLATION - Flat washers designed for quick, reliable fitting with metric bolts.
ENGINEERED FOR ENDURANCE - Copper’s natural corrosion and oxidation resistance ensures long-lasting performance.

The 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. Ideal for automotive, marine, and electrical applications, these smooth-surfaced washers ensure leak-proof, secure connections while reducing friction and wear.

Specifications

ASIN	B07H299LZM
Best Sellers Rank	#82,403 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #442 in Flat Washers
Brand	HELIFOUNER
Color	Copper
Customer Reviews	4.7 out of 5 stars 537 Reviews
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 kg
Manufacturer	HELIFOUNER
Material	Copper
Material Type	Copper
Metal Type	Copper
Model	SLKRWASHER-COPPER--150P
Number Of Items	150
Number of Pieces	150
Outside Diameter	26 millimeters
Part Number	SLKRWASHER-COPPER--150P
Screw Head Style	Flat
Set Name	Copper Metric Sealing Washers Flat Washers Assortment Kit (150 Piece)
Size Name	Assorted (8 Sizes)
Thread Size	M6
UPC	781573059465
Unit Count	1 Count
Washer Application	automotive, electrical, marine
Washer Compatibility	metric bolts
Washer Type	Flat

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

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

5 days ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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R578

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Vikram D.

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

2 weeks ago

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