21 AWG KA1 Flat Clapton (21 / 36 AWG) 3.00 Ω/m – 5 Metre Spool (15ft)


The 21 AWG KA1 Flat Clapton wire, with a 21 / 36 AWG gauge and 3.00 Ω/m resistance, comes in a 5-metre spool. Ideal for precision electronic projects, it features a flat design for efficient heat distribution and a dual-gauge construction for durability and flexibility. This wire is a practical choice for both hobbyists and professionals, offering ease of use and consistent performance.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

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21 AWG KA1 Flat Clapton

The 21 AWG KA1 Flat Clapton wire, measuring 21 / 36 AWG and offering a resistance of 3.00 Ω/m, is a versatile and efficient choice for a range of applications. Providing ample length for multiple projects, it is supplied on a 5-metre spool (approximately 15 feet). Because of its flat design, this wire has a larger surface area for improved heat distribution, making it ideal for precision electronic projects where electrical conductivity and consistent heating are critical. Flexible and durable, its dual-gauge construction makes it ideal for a wide variety of applications. In addition to minimising tangling and waste, the spool packaging facilitates easy storage and handling. Both hobbyists and professionals seeking high-quality, resistant wiring solutions can benefit from this wire’s cost-effective and reliable performance.

About The Product

The details of this product are as follows:

  • Spool Length – 5 Metre Spool (15ft)
  • Metal – FeCrAl A1 Alloy (K A1)
  • Resistance – 3.00 Ω/m
  • Coil Type – 21 AWG / 36 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

Is KA1 Flat Clapton Resistant to Harsh Weather Environments?

Yes, the KA1 Flat Clapton wire is generally resistant to harsh environmental conditions such as rain, sleet, and snow. Durability and resistance to various environmental factors are among the factors considered when selecting the materials for its construction. There may, however, be differences in the extent of the material’s resistance to various conditions like extreme temperatures, humidity, or corrosive conditions. Specially designed products should be consulted for detailed information about their capabilities and limitations in environments that are exposed to severe weather conditions, particularly those involving extreme temperatures.

How Does The Flat Design Of The KA1 Wire Affect Its Performance?

The flat design of the KA1 Flat Clapton wire significantly enhances its performance in several ways. Firstly, the increased surface area provided by the flat shape allows for more efficient heat distribution. This is particularly beneficial in applications where consistent and even heating is crucial. Secondly, the flat profile can improve the wire’s electrical conductivity, as the larger surface area can facilitate a more uniform current flow compared to round wires. This can result in better performance in electronic projects where precise electrical control is necessary. Lastly, the flat design can also contribute to the wire’s flexibility and ease of installation, making it more adaptable to various project requirements.


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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