602209 - Miller 602209 Internal Tooth Lock Washer, 1/4-inch (2-Pack)

Genuine Miller 602209 Internal Tooth Lock Washer (2-Pack)

Maintain the integrity and reliability of your Miller welding equipment with the genuine Miller 602209 Internal Tooth Lock Washer. This essential piece of hardware is designed to meet the exact engineering specifications of Miller Electric power sources and accessories. Sold in a convenient package of two, this washer is a critical component for repairs, maintenance, and reassembly of industrial machinery where vibration resistance is paramount.

The Miller 602209 features an internal tooth design, often referred to as a star washer. Unlike standard flat washers, the internal teeth are twisted slightly to bite into the bearing surface of the fastener and the mating part. This mechanical action creates a high-friction assembly that effectively resists loosening caused by the operational vibration of fans, transformers, and heavy-duty welding cycles. Additionally, the biting action of the teeth can help establish a solid electrical continuity in grounding applications, making it a dual-purpose component in electromechanical assemblies.

Constructed from high-quality steel, this washer offers the tensile strength required for secure fastening. It is finished with a protective plating that guards against oxidation and corrosion, ensuring that the part remains functional even in challenging workshop environments. The dimensions are precision-manufactured with an inside diameter of 0.256 inches, an outside diameter of 0.478 inches, and a thickness of 0.028 inches, making it the perfect fit for standard 0.250 (1/4-inch) bolts and screws.

When servicing expensive welding equipment, substituting generic hardware can lead to fitment issues or premature failure. Using the OEM Miller 602209 washer ensures that your machine is reassembled to factory standards. Whether you are replacing a worn-out component or performing a complete overhaul, these washers provide the security and peace of mind that comes with using original manufacturer parts.