KH712 - Lincoln Electric 11-35 Tweco Style Contact Tips (10 Pack)

Precision Copper Contact Tips for Tweco Style MIG Guns

The Lincoln Electric KH712 Contact Tips are engineered to provide reliable electrical transfer and wire guidance for MIG welding applications using 0.035-inch (0.9mm) wire. Manufactured to precise tolerances, these tips are designed to be fully compatible with Tweco® style MIG guns, specifically those utilizing the industry-standard 11-Series consumables. This makes them a versatile choice for a wide range of welding equipment found in industrial fabrication shops, automotive repair facilities, and maintenance departments.

Constructed from high-grade copper alloy, these contact tips offer excellent thermal and electrical conductivity. This material composition is critical for minimizing resistance heating at the point of contact, which helps to extend the life of the tip and maintain a stable welding arc. The internal bore is machined to ensure smooth wire feeding, reducing the friction that can lead to erratic arc performance or bird-nesting at the drive rolls. The standard 1/4"-28 threaded base ensures a secure and efficient connection to the gas diffuser, preventing gas leakage and ensuring consistent current transfer.

Regular replacement of contact tips is essential for maintaining weld quality. As the tip bore wears into an oval shape (keyholing), the electrical contact point becomes inconsistent, leading to micro-arcing inside the tip and unstable transfer. The KH712 pack contains ten replacement tips, providing operators with a ready supply of consumables to minimize downtime and maintain peak equipment performance. These tips are suitable for use with both solid MIG wires and gas-shielded flux-cored wires.