How to choose the right size HELIFOUNER copper washer for my bolt?

Match the washer's inner diameter to your bolt or screw diameter (e.g., an M6 washer for an M6 bolt). For this HELIFOUNER set, sizes range from M5 to M20. Check if your fasteners are metric (M-series) or imperial/SAE and buy the matching standard. This kit focuses on metric sizes commonly used in India.

What is the difference between a copper washer and a steel washer?

Copper washers offer superior corrosion resistance, especially in wet or humid Indian environments, and have higher heat resistance than standard steel washers. They also provide a tighter seal and are nonmagnetic and electrically conductive, making them ideal for sensitive applications where steel might corrode or fail.

Are these HELIFOUNER copper washers suitable for use in India?

Yes, these metric-sized copper washers are well-suited for India. Their corrosion resistance is beneficial in humid climates, and they are designed for automotive, marine, and electrical applications common in India. All customs duties and GST are included, and delivery is via ExpressBox tracked shipping within 18-20 days.

What applications are best for copper crush washers?

Copper crush washers, like those in this HELIFOUNER set, are excellent for sealing sump plugs, fuel lines, oil lines, and hydraulic accessories. They deform slightly under pressure to create a tight seal, preventing leaks in high-pressure or high-temperature automotive and machinery applications.

How many pieces are in the HELIFOUNER copper washer assortment kit?

The HELIFOUNER kit contains a total of 300 pieces across 12 different metric sizes, ranging from M5 to M20. This generous quantity ensures you have ample supply for multiple projects and repairs.

Are these washers safe for children?

No, these washers are small parts and should be kept away from children and kids to prevent choking hazards. The product packaging includes a warning to this effect.

HELIFOUNER Copper Washer Assortment Set 300 Pieces M5-M20 | Corrosion Resistant Metric Sealing Washers

Name: HELIFOUNER Copper Washer Assortment Set 300 Pieces M5-M20 | Corrosion Resistant Metric Sealing Washers
Brand: HELIFOUNER
SKU: eux2863
Price: 3833.00 INR
Availability: InStock

About this item

The HELIFOUNER Copper Washer Assortment Set provides 300 high-quality copper washers in 12 metric sizes (M5-M20). Sourced from authorized US retailers, these washers offer excellent corrosion resistance in wet environments, nonmagnetic properties, and electrical conductivity. They are designed to reduce friction between nuts and bolts, prevent leaks, and isolate connections, ensuring a secure fit for various applications. All customs duties and GST are included in the price, with delivery via ExpressBox tracked shipping within 18-20 days.

Each washer is crafted from quality copper, providing a tighter seal and higher heat resistance compared to steel or rubber alternatives. Their smooth surface helps minimize friction, preventing the nut or bolt head from tearing through the fastened material. This makes them perfect for critical connections in household and commercial appliances, automotive systems, and marine uses where a reliable power source connection is essential.

Compared to local Indian alternatives, these imported copper washers offer verified material quality and precise metric sizing for demanding applications. The set includes a convenient, sturdy storage case for easy organization and access to the 300 pieces across 12 sizes. Ensure your projects have the right seal with this essential hardware kit.

Key Features

Size — 12 sizes 300 pieces copper washers assortment kit, include M5 M6 M8 M10 M12 M14 M16 M20, different sizes can meet your different needs.
Material — All flat washers are made of copper, have a tighter seal and high heat resistance than steel and rubber washers. Copper washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Functions — Used with nuts and bolts and provide a greater bearing surface to prevent the nut or bolt head tearing through the fastened material, flat washers are used to support and spread the load across the baring area of the bolt and nut to prevent pull through.
Wide Applications — Widely used for sump plugs, automotive brake lines, fuel, oil lines, hydraulic accessories, water. A sump plug washer set fit all types of engines, such as generators, marine, cars, machinery and factory.
Package Include — It contains 300 pieces/12 sizes of the most commonly used copper flat washers, all copper washers are packed in a sturdy convenient case which can be use for a storage box.

Why choose this product

Engineered for Reliable Sealing

This HELIFOUNER copper washer assortment kit is built for performance. The high-quality copper material ensures superior corrosion resistance and high heat tolerance, crucial for applications exposed to moisture or temperature fluctuations. Unlike standard steel washers, copper provides a tighter, more reliable seal, preventing leaks in critical systems like automotive sump plugs, brake lines, and fuel systems. The smooth surface reduces friction, protecting the fastened material and ensuring a secure connection. These washers are nonmagnetic and electrically conductive, adding versatility for electrical connections in appliances and machinery. Imported directly from authorized US retailers, this kit guarantees authentic quality for your demanding projects.

Ideal for Indian Mechanics & DIYers

This set is perfect for mechanics and DIY enthusiasts in India dealing with automotive repairs, marine equipment, or household appliances. The metric sizing (M5-M20) aligns with most Indian machinery. If you're working on a vehicle, generator, or need to ensure a watertight seal on plumbing, these copper washers offer better durability and corrosion resistance than local steel alternatives, especially in India's humid climate. For those who value long-term reliability and a secure fit, this imported kit is a smart choice. Skip the uncertainty of local hardware and opt for verified quality.

How to use

Select the Correct Size — Identify the bolt or screw size you are using. Choose a HELIFOUNER copper washer with an inner diameter that closely matches the fastener's diameter, ensuring a snug fit without excessive play.
Prepare the Surfaces — Ensure both the surface where the washer will sit and the mating surface (nut or bolt head) are clean and free from debris, oil, or rust. This ensures optimal contact and sealing.
Install the Washer — Place the selected copper washer onto the bolt or screw before inserting it through the material. Ensure it sits flat against the surface to distribute pressure evenly and prevent pull-through.
Tighten Securely — Tighten the nut or bolt to the appropriate torque specification. The copper washer will deform slightly, creating a tight seal that prevents leaks and vibration loosening.

Example scenarios

Typical situations where HELIFOUNER Copper Washer Assortment Set 300 Pieces M5-M20 | Corrosion Resistant Metric Sealing Washers helps — illustrative scenarios, not customer reviews.

Scenario 1

Illustrative example

Where it helps

A mechanic in Chennai needs to replace a leaking sump plug washer on a car during monsoon season.

How this product helps

Using a HELIFOUNER M14 copper washer from the imported set ensures a tight, corrosion-resistant seal that withstands humidity and prevents future leaks, unlike a standard steel washer that might rust quickly.

Scenario 2

Illustrative example

Where it helps

A DIY enthusiast in Delhi is repairing an old generator and needs reliable electrical connections.

How this product helps

The HELIFOUNER copper washers' electrical conductivity and nonmagnetic properties ensure secure, efficient connections for the generator's power source, preventing shorts or corrosion issues common with lower-grade materials.

Ingredients

Material Composition	High Quality Copper
Properties	Corrosion resistant, nonmagnetic, electrically conductive

How we compare

Feature	HELIFOUNER Copper Washer	Others
Material & Corrosion Resistance	High-quality copper; superior corrosion resistance in wet/humid conditions.	Often plain steel or lower-grade alloys; prone to rust in Indian humidity, requiring frequent replacement.
Sealing Performance	Tighter seal, high heat resistance, prevents leaks effectively.	Variable sealing quality; may require additional sealants or frequent checks for leaks.
Metric Sizing Accuracy	Precise metric sizing (M5-M20) for reliable fitment.	Metric sizes may vary in accuracy; imperial sizes sometimes mislabeled as metric.
Cost per Piece	300 pieces in kit — ₹12.78 per piece	Local steel washers: ₹5-₹20 per piece for basic sizes; copper alternatives can be ₹15-₹50+ per piece, often with lower quality.
Application Versatility	Ideal for automotive, marine, electrical, plumbing; nonmagnetic & conductive.

SKU	eux2863
GTIN	0781573106909
Brand	HELIFOUNER
Color	Copper
Material	Copper
Exterior Finish	Copper
Item Shape	Flat
Washer Type	Flat
Number of Pieces	300
Number of Packs	12
Package Quantity	1
Item Package Quantity	1
Customer Package Type	Standard Packaging
Country of Origin	Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners

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HELIFOUNER Copper Washer Assortment Set 300 Pieces M5-M20 | Corrosion Resistant Metric Sealing Washers

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About this item

Key Features

Why choose this product

How to use

Example scenarios

Ingredients

How we compare

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