KP2103-5B1 - Lincoln Electric Magnum Contact Tip, 5/64 in Wire, 3/8-16 Thread (10-Pack)

Precision Engineering for Magnum MIG Guns

The Lincoln Electric KP2103-5B1 Contact Tip is a critical consumable designed to maintain the high performance of your Magnum semiautomatic welding equipment. Engineered to precise tolerances, this contact tip is specifically sized for 5/64-inch (2.0 mm) welding wire, making it an essential component for heavy-fabrication and industrial welding tasks where larger diameter wires are utilized. The tip features a carefully machined Inner Diameter (ID) of 0.093 inches, which provides the optimal balance between wire clearance and electrical contact. This precision ensures that the welding current is transferred efficiently to the wire, promoting a stable arc and consistent weld bead profile.

Durability is paramount in industrial environments, and Lincoln Electric delivers with a robust design featuring a 3/8"-16 thread. This coarse thread specification ensures a secure mechanical connection to the gas diffuser or gun tube, preventing the tip from loosening due to thermal expansion or vibration during extended welding sessions. A loose contact tip can lead to poor conductivity, overheating, and erratic arc characteristics, but the KP2103-5B1 is built to stay seated and perform under pressure.

This product is supplied as a package of 10, providing excellent value and ensuring that welding operators have immediate access to replacements when needed. Regular replacement of contact tips is vital for maintaining weld quality, as worn tips can cause wire wandering and keyholing. By choosing genuine Lincoln Electric consumables, you ensure compatibility with your Magnum series equipment and protect the longevity of your welding gun liner and diffuser system.

Whether you are welding structural steel, heavy machinery, or performing maintenance repairs, the KP2103-5B1 offers the reliability required for high-amperage MIG and flux-cored applications. Its copper construction is optimized for thermal conductivity, helping to dissipate heat effectively and reduce the risk of burnback, keeping your production line moving efficiently.