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Miller Replacement T-Handle Knob 1/4-20 Thread

$15.82/EA $11.14/1 PER EA only $11.14/EASave 30%

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OVERVIEW

Restore Your Miller Welder with the 257864 T-Knob

Keep your welding setup running smoothly with the Miller 257864 T-Knob. Small components like knobs and handles are often the first things to suffer from wear and tear in a busy welding shop. Whether it was sheared off during transport, lost during a repair, or simply stripped out over years of use, a missing knob can make operating your machine frustrating or even impossible. This genuine Miller replacement part is designed to get your equipment back to full functionality instantly, offering the exact fit and feel of the original part that came with your machine.

The T-bar design of this knob is specifically chosen for its ergonomic benefits. Unlike round knobs that can be slippery or hard to grip with welding gloves on, the T-shape allows you to apply torque easily with just your fingers. This is particularly useful for access doors, wire feed tensioners, or cover plates that need to be removed and replaced regularly. The 1.265-inch width is perfectly sized—large enough to grab comfortably but small enough not to snag on cables or clothing. The plastic material is durable and resistant to the grime and oil common in workshops, ensuring it won't crack or degrade quickly.

Installation is as simple as it gets. The knob features a 1/4-20 threaded stud that is 0.625 inches long. You simply line it up and screw it in—no screwdrivers, wrenches, or hex keys required. This tool-free operation is essential for parts of the welder that you need to access on the fly. Because it is an official Miller product, you don't have to worry about cross-threading or the stud being too long or too short. It is built to the exact specs required for your Miller welder.

Don't let a broken five-dollar part hold up a five-thousand-dollar job. Keeping a spare Miller 257864 knob in your maintenance kit is a smart move for any professional welder or shop manager. It ensures that when a handle breaks, you can swap it out in seconds and get back to laying beads. Trust in genuine Miller components to maintain the professional appearance and functionality of your valuable welding assets.

Additional Information
Brand:Miller
Packaging Description:1 Per Ea
Knob Type:T-Bar, T-Handle
Thread Size:1/4-20, .250-20
Stud Length:0.625 in
Bar Width:1.265 in
Material:Plastic

INCLUDED

  • 1 x Miller 257864 T-Knob

APPLICATIONS

  • Replacement of broken or lost knobs on Miller welding power sources.
  • Securing access panels and covers on wire feeders.
  • Manual adjustment points requiring tool-free operation.
  • General repair of equipment requiring 1/4-20 threaded T-knobs.
  • Restoration of vintage or used Miller equipment to factory condition.

FAQ

The knob features a standard .250-20 (1/4-20) UNC thread.

The threaded stud extends 0.625 inches (5/8 inch) from the handle.

The T-handle portion is made of durable industrial plastic.

This part fits various Miller machines. We recommend checking your machine's parts manual or verifying with the serial number to ensure compatibility.

The bar width is 1.265 inches.

No, the T-handle design allows for hand-tightening without the need for tools.

Yes, this is a genuine Miller Electric replacement part, SKU 257864.

While designed for Miller equipment, it can be used in any application requiring a 1/4-20 stud with a 0.625-inch length and T-handle grip.
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