14H-45 - Tweco Style 14H-45 Heavy Duty Contact Tip for .045 Wire

Reliable Performance for Heavy-Duty Welding

When you are laying down beads all day, the last thing you want is a contact tip that overheats or fuses to your wire. The Tweco Style 14H-45 Contact Tip is built for the professional welder who demands consistency and durability. Designed specifically for .045" welding wire, this heavy-duty tip handles the heat of high-amperage applications (up to 400 amps) without breaking a sweat. Its superior copper alloy construction ensures excellent electrical transfer, giving you a smooth, stable arc that makes your welds look great and hold strong.

Universal Fit for Top Gun Brands

Versatility is key in any shop. This contact tip is a direct replacement for the industry-standard Tweco 14 Series, making it compatible with some of the most popular MIG guns on the market. Whether you are running a Tweco® No. 2, 3, or 4, or a Lincoln® Magnum® assembly, this tip fits right in. It threads securely into standard 52 and 54 series gas diffusers, so you can swap it out quickly and get back to burning wire. No need to worry about proprietary parts—this tip is the workhorse universal solution for your heavy-duty MIG guns.

Precision Engineering for Smooth Feeding

Wire feeding issues can ruin a good weld and waste valuable time. The 14H-45 is machined with a precise internal bore tolerance to ensure your .045" wire glides through smoothly, reducing drag and preventing bird-nesting at the drive rolls. The smooth internal finish also improves electrical contact, which is critical for maintaining a consistent voltage and arc length. Whether you are fabricating structural steel or repairing heavy machinery, trust the 14H-45 to deliver the performance you need to get the job done right.

Why Choose the 14H Series?

• Built Tough: Thicker walls than standard tips for better heat dissipation.
• Easy ID: Stamped markings make it easy to grab the right size every time.
• Cost-Effective: Get OEM-level performance at a value that keeps your shop running efficiently.