Tweco 1160-1429 Mig Contact Tip 0.078 in Wire 1.5 in

Product Description

The TWECO 1160-1429 is a threaded MIG welding contact tip designed for use with 5/64 inch (0.078 inch) wire diameter and rated for heavy-duty welding applications up to 600 amps. Machined from 122 DHP copper alloy tubing, the tip delivers consistent electrical conductivity and a smooth inside diameter surface held to a tolerance of plus or minus 0.003 inches. The nominal bore ID is 0.09 inches with an OD of 0.375 inches, and the tip measures 1.5 inches in length. The M8 x 1.25-6g thread ensures secure, positive contact with the gas diffuser on compatible MIG guns. Each tip is individually marked with its part number and wire diameter for quick field identification.

This contact tip is built for heavy-duty MIG welding environments where consistent arc performance and tip longevity are critical. It is suited for production welding, fabrication shops, and maintenance operations running high-amperage MIG equipment. The threaded design seats firmly against the gas diffuser, reducing arc wandering and protecting weld quality. Welding professionals running continuous or high-cycle operations will find the machined copper alloy construction helps maintain a stable, low-resistance current path over extended service life.

Key Features

• Rated for welding applications up to 600 amps
• Machined from 122 DHP copper alloy tubing for consistent bore surface and electrical performance
• Inside diameter tolerance held to plus or minus 0.003 inches for reliable wire feeding
• M8 x 1.25-6g threaded style ensures proper seating against gas diffuser
• Part number and wire diameter marked on each tip for easy identification
• Nominal bore ID of 0.09 inches accommodates 5/64 inch (0.078 inch) MIG wire

Compatibility

Designed as a threaded OEM-style replacement contact tip for MIG guns and torches accepting M8 x 1.25-6g threaded tips with a 0.09 inch bore for 5/64 inch wire diameter.

Installation Notes

Contact tip installation and replacement should be performed by a qualified welder or welding technician with the MIG gun de-energized and the wire feeder stopped. Allow the gun neck and tip to cool before handling to avoid burns. Use the appropriate tip wrench to torque the tip snugly against the gas diffuser without over-tightening, which can distort the thread or split the tip. Follow the torch and gun manufacturer service guidelines and applicable workplace safety standards during replacement.

Technical Specifications

• Wire Diameter: 0.078 inches (5/64 inch)
• Bore ID: 0.09 inches nominal
• Bore ID Tolerance: plus or minus 0.003 inches
• Outside Diameter: 0.375 inches
• Length: 1.5 inches
• Thread Size: M8 x 1.25-6g
• Current Rating: 600 amps maximum
• Material: 122 DHP Copper Alloy
• Weight: 0.04 pounds
• Sold As: Each

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1160-1429