Tweco 1150-1238 Mig Contact Tip 0.062 in 25 Pack

Product Description

The TWECO 1150-1238 is a threaded MIG contact tip designed for the Tweco 15H gun series. Machined from 122 DHP copper alloy tubing, it delivers consistent electrical conductivity and a smooth bore finish critical to stable arc performance. The 0.073 inch nominal bore accommodates 3/32 inch (0.062 inch) wire and is rated for heavy-duty welding applications up to 500 amps. Inside diameter tolerance is held to plus or minus 0.003 inches, ensuring reliable wire feed and reduced burnback. The tip uses a 5/16 inch-18 UNC-2A thread that seats securely against a gas diffuser when installed in the MIG gun. Sold as a pack of 25.

This contact tip is suited for heavy-duty MIG welding in industrial and fabrication environments where consistent arc starts and long consumable life are priorities. The 1.97 inch length and 0.345 inch OD are matched to the Tweco 15H gun platform. Each tip is stamped with the part number and wire diameter, speeding up identification during changeovers in production or field welding settings. Licensed welders and certified welding operators in manufacturing, structural steel, and maintenance-repair-operations (MRO) shops are the primary installers.

Key Features

• 0.073 inch nominal bore with plus or minus 0.003 inch ID tolerance for controlled wire feed
• Machined from 122 DHP copper alloy tubing for consistent conductivity and smooth bore surface
• Rated for heavy-duty welding up to 500 amps
• 5/16 inch-18 UNC-2A threaded style ensures positive contact with gas diffuser
• Part number and wire diameter stamped on each tip for fast field identification
• Sold 25 per pack to reduce changeover downtime

Compatibility

Designed as a replacement contact tip for the Tweco 15H MIG gun platform, accommodating 3/32 inch wire diameter in threaded-style gas diffuser assemblies.

Installation Notes

Installation is performed by qualified welding technicians or certified welding operators. Always power down the welder and allow the gun to cool before removing or installing contact tips. Thread the tip in by hand until snug, then tighten with an appropriate wrench — do not overtighten, as this can distort the thread and affect gas diffuser seating. Inspect the bore for spatter buildup at each tip change to maintain wire feed consistency.