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Two copper welding nozzles with silver tips on dark background

Miller Enterprises

Miller Enterprises NS-M1200C welding nozzle AccuLock MDX pack of 2

SKU CH-XP56-57M6G MPN NS-M1200C

Welding nozzle for MDX-100 MIG guns, AccuLock MDX compatible, pack of two

  • TypeOthers
  • AccuLock MDX system ensures precise tip alignment
  • Pack of two nozzles reduces downtime for replacements
  • Designed for MDX-100 MIG gun compatibility
  • Works with AccuLock MDX contact tips and D-M100 diffuser
  • Miller Electric quality built for professional welding applications

AccuLock MDX welding nozzle pack

The Miller Enterprises NS-M1200C is a two-piece set of welding nozzles built for the AccuLock MDX system. They are intended for welders who use MDX-100 MIG guns and want a direct-fit consumable that supports consistent gas coverage. Each nozzle is manufactured by Miller Electric for professional and industrial welding environments.

Replaces worn nozzles on MDX-100 guns

When an existing nozzle shows erosion, spatter buildup or irregular gas flow, this pack restores the original shield geometry. The upgrade is worth it when the contact tip recess or diffuser alignment has shifted enough to affect bead quality. No other gun models are supported by this specific nozzle design.

Verify gun model and consumable compatibility

Before ordering, confirm the torch is an MDX-100 MIG gun and that the contact tips, diffuser, liners and power pin caps in use are AccuLock MDX components. The nozzle threads and bore dimensions are matched to that system only. Using mismatched parts can cause gas leaks or tip seating issues.

Highlights

  • AccuLock MDX system ensures precise tip alignment
  • Pack of two nozzles reduces downtime for replacements
  • Designed for MDX-100 MIG gun compatibility
  • Works with AccuLock MDX contact tips and D-M100 diffuser
  • Miller Electric quality built for professional welding applications

Specifications

TypeOthers
BrandMILLER ELECTRIC
ModelNS-M1200C

Questions about this item

Does the NS-M1200C nozzle fit the MDX-100 MIG gun directly?

Yes, the nozzle is designed for use with MDX-100 MIG guns and pairs with AccuLock MDX contact tips and D-M100 diffuser.

What is the correct order to install the nozzle, diffuser and contact tip so the lock seats properly?

Install the D-M100 diffuser first, then the AccuLock MDX contact tip, then thread the NS-M1200C nozzle onto the diffuser until it locks.

When should I replace the nozzle versus the contact tip or diffuser?

Replace the nozzle when the bore is worn or spatter blocks gas flow; swap the contact tip when the wire drags, and the diffuser if gas leaks at the joint.

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