284100 - Miller Tri-Lobe Knob 1/4-20 Thread 1.25 Inch Stud Black

Miller 284100 Tri-Lobe Knob with Stud

The Miller 284100 is a high-quality replacement knob designed for various Miller welding machines and industrial equipment. As an essential piece of hardware, this knob is often used for securing covers, adjusting mechanical settings, or fastening accessories to the power source. Manufactured to Miller's strict tolerances, this OEM part ensures that your equipment functions exactly as intended, preventing the loose panels or difficult adjustments associated with worn-out hardware.

Technical Specifications

This component is characterized by its .250-20 UNC thread, a standard 1/4-inch coarse thread widely used in North American manufacturing. The stud extends 1.250 inches from the base of the knob, providing ample length for applications requiring a deep reach or the fastening of multiple layers. The head of the knob utilizes a tri-lobe geometry, which offers three distinct points of contact for the user's fingers. This design maximizes torque transfer, allowing for a tight seal or secure hold with minimal manual effort.

Reliable Construction

Constructed from durable black plastic with a metal stud insert, the Miller 284100 is resistant to corrosion and general shop wear. The integrated stud design means there are no separate bolts to lose; the unit functions as a single, cohesive fastener. It is an ideal spare part to keep in your maintenance kit, ensuring that minor hardware failures do not lead to equipment downtime.

Application and Compatibility

While specific machine compatibility should always be verified via your equipment's serial number and parts breakdown, this knob is a common fixture on many Miller MIG, TIG, and Stick welders. Using genuine Miller parts guarantees that the thread pitch and stud length are correct, avoiding potential damage to the female threads on your expensive welding rig. Trust Welders Supply for all your authentic Miller repair parts and accessories.