14-30 - 14-30 Contact Tip .030 for Tweco #2-#4 & Lincoln Magnum Guns (25 Pack)

Technical Overview of the 14-30 Contact Tip

The GEN14-30 is a high-performance replacement contact tip designed to meet the rigorous demands of industrial MIG welding. Engineered as a direct equivalent to the Tweco® 14-30 (Part No. 1140-1101), this consumable is manufactured from a premium copper alloy tubing that ensures optimal electrical conductivity and thermal transfer. The tip features a standard 1.50-inch length and an outside diameter of 0.375 inches, making it fully compatible with standard gas diffusers found in Tweco® No. 2, No. 3, and No. 4 MIG guns, as well as the Lincoln® Magnum® 250, 300, and 400 series assemblies.

Precision machining is critical in contact tip performance. The GEN14-30 is bored with a strict internal diameter tolerance of +/- .003 inches. This precision ensures a consistent electrical contact point with the .030" (0.8mm) electrode wire without causing excessive drag or friction that could lead to bird-nesting at the drive rolls. The 1/4"-28 UNF threaded base provides a secure mechanical connection to the gas diffuser (such as the 52, 52FN, or 54A series), minimizing electrical resistance at the joint and reducing heat buildup which can prematurely degrade the consumable.

Designed for applications ranging up to 400 Amperes, this contact tip is suitable for general fabrication, structural steel, and manufacturing environments utilizing standard short-circuit, globular, or spray transfer modes. The tips are stamped with the part number and wire diameter for immediate identification on the shop floor. Supplied in a package of 25, this product offers a cost-effective solution for maintaining inventory levels of critical high-wear components in high-volume welding operations.