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1880278 - Miller AccuLock S .035 Consumable Kit for MDX-250 Series Guns

Packaging: 1 per ea
$149.15/ea $105.02/1 per ea only $105.02/eaSave 30%

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OVERVIEW

Upgrade Your Weld with the Miller AccuLock S Consumable Kit

Keep your Miller MDX-250 MIG gun running like new with the genuine Miller 1880278 AccuLock S Consumables Kit. Designed for welders who demand reliability and ease of use, this kit takes the guesswork out of finding the right parts for your .035" wire setup. Whether you are working on a critical fabrication project or handling daily repairs, having a fresh set of front-end consumables is the key to maintaining a smooth, stable arc and preventing frustrating wire feed issues. This convenient all-in-one package ensures you have plenty of backup tips and the correct nozzle and diffuser to keep you welding without interruption.

The AccuLock S system is a game-changer for wire feeding performance. If you have ever struggled with burnbacks or erratic feeding, the AccuLock design is the solution. It works by locking the liner in place at the front of the gun, creating a perfectly aligned path for the wire from the feeder all the way to the weld puddle. This means less drag, fewer tangles, and a much more consistent bead. The contact tips feature a coarse thread that makes changing them out incredibly fast—just a few turns and you are back to welding. Plus, the tapered connection ensures excellent conductivity, giving you a "hotter" and more responsive start every time you pull the trigger.

This kit is specifically tailored for the MDX-250 series guns found on many of Miller's advanced machines. It includes ten heavy-duty AccuLock S contact tips, a thread-on nozzle that stays tight even when hot, a gas diffuser, and a nozzle insulator. Everything comes packed in a sturdy, divided storage case that fits easily in your tool bag or on your welding cart. Don't let a worn-out tip or clogged nozzle stop your progress; stock up with the Miller 1880278 kit and experience the difference that premium AccuLock S consumables make in your daily welding applications.

Additional Information
Brand:Miller
Wire Size:0.035"
Item:Accessory
Packaging Description:1 per each
Fits Which Model:Miller MDX-250 MIG Gun
Product Type:MIG Gun Consumable Kit
Series:AccuLock S
Compatible Gun:MDX-250, MDX-250 EZ-Select
Wire Diameter:0.035" (0.9mm)
Kit Components:Contact Tips, Nozzle, Diffuser, Insulator, Storage Box

INCLUDED

  • 10 x AccuLock S .035" Contact Tips (T-A035CH)
  • 1 x AccuLock S Thread-On Nozzle (N-A5800C)
  • 1 x AccuLock S Diffuser (D-MA250)
  • 1 x Nozzle Insulator (4623R)
  • 1 x Miller Electric Sticker
  • 1 x Clear Divided Storage Container

APPLICATIONS

  • Industrial Fabrication
  • Automotive Repair and Restoration
  • Heavy Equipment Maintenance
  • Structural Steel Welding
  • General Manufacturing
  • Farm and Ranch Welding

FAQ

This kit is designed specifically for use with Miller MDX-250 and MDX-250 EZ-Select MIG guns.

This kit is configured for .035-inch (0.9mm) welding wire.

No, you cannot combine series. You must use either all AccuLock S (Industrial) or all standard AccuLock MDX consumables. They are not interchangeable within the same setup.

The tapered connection locks the contact tip to the diffuser, providing superior electrical conductivity and ensuring the tip is perfectly centered with the liner for better wire feeding.

The N-A5800C nozzle included in this kit is threaded. It features a steel retaining ring on the diffuser to keep it tight during use and cleaning.

By locking the liner at the front of the gun, the system eliminates gaps and misalignment between the liner and tip, ensuring a smooth feed path that prevents the wire from dragging or catching.

The kit contains 10 contact tips (.035"), 1 nozzle, 1 diffuser, 1 nozzle insulator, and the storage container itself.

Yes, the contact tip tail is cooled inside the diffuser by the shielding gas, which helps manage heat and extend the life of the consumables.