21 AWG KA1 Flat Clapton (21 / 38 AWG) 3.20 Ω/m – 5 Metre Spool (15ft)


The 21 AWG KA1 Flat Clapton wire combines a 21 AWG core with a 38 AWG wrap, offering low resistance at 3.20 Ω/m. It’s durable, efficient, and ideal for precise electrical projects. Supplied in a 5-meter spool for ease of use, this wire is perfect for electronics enthusiasts and professionals alike.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

✔ 30 Day Returns Accepted

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21 AWG KA1 Flat Clapton

The 21 AWG KA1 Flat Clapton is a high-quality wire, ideal for precise electrical applications. As a result of its core diameter of 21 AWG and wrap diameter of 38 AWG, it has a resistance of 3.20 ohms per meter, ensuring high efficiency. This durable wire comes on a 5-meter (approximately 15 feet) spool, making storage and handling easier. It is known for its thermal stability and resistance to oxidation. Due to its flat Clapton structure and KA1 alloy composition, this connector is highly reliable and suitable for a variety of projects, particularly in electronics and DIY tasks.

About The Product

The details of this product are as follows:

  • Spool Length – 5 Metre Spool (15ft)
  • Metal – FeCrAl A1 Alloy (K A1)
  • Resistance – 3.20 Ω/m
  • Coil Type – 21 AWG / 38 AWG Flat Clapton

Why Use The Crazy Wire Company

  1. Quality of products: The Crazy Wire Company always  offer high-quality products that meet industry standards and customer expectations.
  2. Selection: We offer a wide variety of wire products and sizes to meet the diverse needs of our customers. We have more than 600 products available through our site and counting. 
  3. Price: We always offer the best value possible. Our wires are available as part of our major weaving processes, so it is bought at the best possible rate. 
  4. Availability: Our products are kept in house and are ready to ship immediately. 
  5. Customer service: Our experienced staff help our customers feel confident in their purchases and provide assistance when required. 

What Else Is Available?

We do not only offer KA1 wire. We also have a huge range of Nichrome and stainless steel wire in immediate stock too.

Ribbon wire and flat wire are stocked for immediate dispatch too.


FAQs About This Product

How Durable Is 21 AWG KA1 Flat Clapton Wire Over Time?

Its exceptional durability over time is one of the most highly regarded characteristics of 21 AWG KA1 Flat Clapton wire. Its high-quality KA1 alloy construction ensures that it will resist oxidation and thermal degradation, which are common problems in wires that are not as durable. Due to its resistance to environmental factors, the wire is able to maintain its integrity and performance even when exposed to prolonged exposure. Moreover, the Clapton structure of the wire contributes to its strength, making it less prone to breakage or wear compared to round wires. Its longevity and consistent performance make KA1 Flat Clapton wire an excellent choice for projects that need long-term performance and reliability.

Is 21 AWG KA1 Flat Clapton Wire Easy To Handle And Install?

Yes, the 21 AWG KA1 Flat Clapton wire is designed to be easy to handle and install. Its flat Clapton structure, while providing superior performance, also ensures that the wire is more manageable compared to some other high-performance wires. This flat profile allows for better grip and control during installation. Additionally, being wound on a 5-meter spool helps in easy dispensing and reduces the likelihood of tangling, making the handling process smoother. These features, combined with its flexibility and strength, make the 21 AWG KA1 Flat Clapton wire a user-friendly option for both professionals and hobbyists in various electrical projects.


Check out our blog expanding on the difference between Clapton and Flapton coil wires. This is an extremely detailed article, which we hope will provide much insight into the subject. 

We also offer similar products through our highly popular eBay store, check us out there too.

Contact our team today if you have any questions at all. We are always really keen to help in any way that we can.


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