185106 - Miller Liner Collet Nut (Pack of 2)

Technical Overview of the Miller 185106 Liner Collet Nut

The Miller 185106 Nut, Liner Collet is a critical component designed for the maintenance and repair of specific Miller MIG welding guns. This part functions as the retention mechanism for the liner collet, which in turn secures the wire liner within the gun's power pin assembly. In Gas Metal Arc Welding (GMAW), the stability of the liner is paramount to achieving consistent wire feeding. If a liner is allowed to float or move within the cable assembly, it can lead to variations in wire stick-out, erratic arc characteristics, and the common frustration of birdnesting at the drive rolls.

Manufactured to Miller's precise engineering standards, this nut features durable threading and correct dimensional tolerances to fit seamlessly with compatible Miller liner collets. The nut applies the necessary axial force to compress the collet against the liner, creating a friction grip that holds the liner firmly in position. This is particularly important when using softer wires like aluminum or when welding with longer gun cables where friction is higher. Using genuine OEM parts like the 185106 ensures that the thread pitch matches perfectly with the mating components, preventing cross-threading or stripping that can occur with ill-fitting aftermarket substitutes.

This product is supplied as a package of two, recognizing that small hardware components are easily lost during field repairs or routine maintenance. Professional welding technicians understand that the liner system is a consumable assembly that requires regular inspection. When replacing a liner, the condition of the collet nut should also be assessed. If the hex head is rounded off from previous tightening or if the threads show signs of wear, immediate replacement is recommended to maintain the integrity of the gun's gas and wire delivery systems. This component is an essential stock item for maintenance, repair, and operations (MRO) inventories supporting Miller welding equipment.