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KP14H-45 - Lincoln Electric KP14H-45 Heavy Duty .045 Contact Tip (10-Pack)

Packaging: 10 in a pack
$3.62/ea $26.70/10 in a pack only $2.67/eaSave 26%

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OVERVIEW

Reliable Feeding for Smooth Beads

Every welder knows that a bad contact tip can ruin a good day. If you are fighting an erratic arc, burnbacks, or a wire that just won't feed smoothly, it might be time to swap out your tip for a Lincoln Electric KP14H-45. These are the Heavy Duty versions of the standard 14-series tips, meaning they have a bit more meat on them. That extra copper isn't just for looks—it helps keep the tip cooler when you are running high amps or long beads. A cooler tip means less spatter sticking to the face and less chance of the wire fusing inside the bore.

Designed specifically for .045" (1.2 mm) wire, these tips are the workhorses for structural steel, heavy fabrication, and general repairs. They fit perfectly on your Lincoln Magnum 200, 300, or 400 gun. If you are running a rig with a Tweco #2 or #4 back end, these will thread right in there too. The 1/4-28 threads are standard, so you won't be cross-threading or fighting to get them seated. When you are in the middle of a job, you want consumables that fit right the first time.

This package comes with 10 contact tips, so you can keep a handful in your pocket or your toolbox. We all know tips are consumables—they wear out. As the hole gets oval-shaped from the wire dragging through it, your electrical contact gets sloppy, and your arc starts to wander. By keeping a fresh pack of KP14H-45s on hand, you can swap out a worn tip in seconds and get back to laying down smooth, consistent welds. Whether you are welding in the shop or out in the field, trusting OEM quality from Lincoln Electric means one less variable to worry about.

Don't let a cheap, worn-out tip compromise your weld quality. Upgrade to the heavy-duty 14H style and experience smoother feeding and better arc starts, especially when pushing your machine's duty cycle.

Additional Information
Brand:Lincoln Electric
Item:Contact Tip
Wire Size:0.045"
Packaging Description:10 in a pack
Front End:Magnum
Tip Relationship:Heavy Duty
Series:14H Series
Bore Diameter:0.054"
Thread Size:1/4-28
Material:Copper Alloy
Compatible Guns:Magnum 200, Magnum 250L, Magnum 300, Magnum 400, Tweco No. 2, Tweco No. 4

INCLUDED

  • 10 x Lincoln Electric KP14H-45 Heavy Duty Contact Tips (.045")

APPLICATIONS

  • Heavy Equipment Manufacturing
  • Structural Steel Fabrication
  • Automotive Repair and Restoration
  • General Industrial Maintenance
  • Shipbuilding and Marine Repair
  • Pipeline Welding

FAQ

The KP14H-45 fits Lincoln Magnum® 200, 250L, 300, and 400 series guns. It is also compatible with Tweco® No. 2 and No. 4 series MIG guns and other brands using the 14-series style consumables.

The 'H' stands for Heavy Duty. The 14H series has a thicker wall and larger outer diameter compared to the standard 14 series. This extra mass allows for better heat dissipation, making it suitable for higher amperage applications and longer welding durations.

This contact tip is precision-drilled for .045 inch (1.2 mm) welding wire. Using wire of a different diameter will result in poor electrical contact or feeding issues.

The Lincoln Electric KP14H-45 is sold in a package of 10 contact tips.

It features a standard 1/4-28 thread, which is the industry standard for Tweco 14-series style gas diffusers.

While it physically fits, aluminum wire expands more when heated. It is generally recommended to use contact tips specifically designed for aluminum (often marked with an 'A' or slightly oversized) to prevent feeding jams. This tip is primarily for steel and stainless steel wires.

You should replace the tip if the bore becomes oval-shaped (keyholing), if the tip is fused with spatter that blocks gas flow, or if you experience erratic arc starts and unstable voltage despite having a good ground.

Yes, the KP14H-45 is a genuine Lincoln Electric OEM part, ensuring high-quality materials and precise manufacturing tolerances.