21 AWG KA1 Flat Clapton (21 / 32 AWG) 4.07 Ω/m – 5 Metre Spool (15ft)


The 21 AWG KA1 Flat Clapton wire, made from durable FeCrAl A1, offers high resistivity and efficient heat distribution. Its unique flat Clapton design enhances surface area in a compact form, ideal for small-scale electronics and hobby projects. With a resistance of 4.07 Ω/m and a 5-meter spool, it’s perfect for various applications requiring precise resistance and reliability.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

✔ 30 Day Returns Accepted

28 in stock

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21 AWG KA1 Flat Clapton

The 21 AWG KA1 Flat Clapton wire is a versatile and durable product suitable for a variety of electrical and hobbyist applications. Using high-resistance FeCrAl A1 materials, it features a flat Clapton configuration in which a thin 32 AWG wire is tightly wound around a 21 AWG core wire. With this design, the surface area is increased while maintaining a compact size, which makes it ideal for projects that require both space and efficient heat distribution.

The wire has a resistance of 4.07 /m and is available on a 5-meter spool. You can use this wire for small-scale electronics, heating elements, and custom coils. With its durability and cost-effectiveness, it can be used by professionals as well as DIY enthusiasts and ensures reliable performance in many different settings.

About The Product

The details of this product are as follows:

  • Spool Length – 5 Metre Spool (15ft)
  • Metal – FeCrAl A1 Alloy (K A1)
  • Resistance – 4.07 Ω/m
  • Coil Type – 21 AWG / 32 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 21 AWG KA1 Flat Clapton Wire Easy To Manipulate And Shape?

Yes, the 21 AWG KA1 Flat Clapton wire is designed to be easy to manipulate and shape. The Clapton structure, which combines a core wire with tightly wound thinner wire, provides a balance between flexibility and stability. By designing the wire in this way, it is easy to bend and form into desired shapes without losing any structural integrity. Also, FeCrAl A1 is an easy-to-handle material because it is known for its workability and durability. This makes the wire an excellent choice for projects requiring precision shaping and forming, such as custom electronics and hobbyist projects. The use of proper tools and handling techniques is recommended, however, if you want to achieve the best results and keep yourself safe at the same time.

Is The 21 AWG KA1 Flat Clapton Wire Recyclable?

Yes, the 21 AWG KA1 Flat Clapton wire is recyclable. The wire is primarily made of FeCrAl A1, a type of iron-chromium-aluminium alloy. Metals like these are commonly recycled. The recycling process involves melting down the metal and reforming it into new products, making it a sustainable choice for environmentally conscious consumers.

However, it’s important to check with local recycling regulations and facilities, as the specific processes and capabilities for recycling can vary. Some facilities may have specific guidelines for recycling alloy materials like KA1. Additionally, any insulation or additional materials on the wire may need to be removed prior to recycling, depending on the recycling facility’s 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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