KP2031-5B1 - Lincoln Electric 1/8" TIG Collet Body for 17/18/26 Series Torches

Genuine Lincoln Electric TIG Collet Body

The Lincoln Electric KP2031-5B1 Collet Body is a critical component for TIG welders seeking precision and reliability. Designed specifically for 1/8-inch (3.2 mm) tungsten electrodes, this collet body acts as the housing for the collet, ensuring the electrode is held firmly in place during welding operations. It is engineered to fit standard 17, 18, and 26 series TIG torches, including Lincoln's own Pro-Torch™ PTA-17, PTA-26, and PTW-18 models.

Constructed from high-quality copper alloy, this collet body offers excellent thermal and electrical conductivity. This is vital for transferring current efficiently from the torch head to the tungsten, minimizing resistance and heat buildup that can lead to premature failure of consumables. By maintaining a secure connection, the KP2031-5B1 helps stabilize the welding arc, resulting in cleaner welds and better control over the puddle.

Regular inspection and replacement of collet bodies are necessary for optimal torch performance. Over time, threads can wear and the internal seating surface can degrade, leading to poor gas coverage or unstable arcs. Using genuine Lincoln Electric parts like the KP2031-5B1 ensures that your equipment operates within factory specifications, providing the durability and consistency professional welders demand.

Key Benefits

• Perfect Fit: Precision manufacturing ensures seamless compatibility with 17/18/26 series torches.


• Enhanced Conductivity: High-grade copper material maximizes current transfer.


• Durability: Resists deformation under high heat conditions typical of TIG welding.