11H-45 - 11H-45 Heavy Duty Contact Tip .045 for Tweco & Magnum MIG Guns (25 Pack)

Reliable 11H-45 Heavy Duty Contact Tips for MIG Welding

Maximize the performance of your MIG welding operations with our premium 11H-45 Tweco Style Heavy Duty Contact Tips. Designed as a direct replacement for the Tweco 1110-1204, these tips are engineered to handle the rigors of industrial welding while providing excellent value. Each tip is precision-machined from high-quality copper alloy tubing, ensuring a consistent inside diameter (ID) tolerance of +/- .003 inches. This precision reduces wire drag and ensures a smooth feed, which is critical for maintaining a stable arc and producing high-quality welds.

The "H" series designation indicates a heavy-duty construction, offering thicker walls than standard tips. This added mass improves heat dissipation and electrical conductivity, allowing the tip to withstand higher amperages—up to 300 amps—without overheating or degrading prematurely. Whether you are using a Tweco Spray Master 250, a Tweco Classic gun with an HD52-11 gas diffuser, or a Lincoln Magnum 100L gun, these tips provide a secure, threaded fit that optimizes current transfer to the welding wire.

Packaged in a convenient set of 25, these contact tips are an essential consumable for any fabrication shop. The clear part number and wire diameter markings on each tip make identification simple, reducing setup time and preventing errors. Compatible with .045" (1.2mm) welding wire, they are ideal for structural steel, automotive repair, and general fabrication tasks. Trust in the reliability of these generic replacements to keep your production line moving efficiently.