Tweco 1160-1138 Mig Contact Tip 0.052 in 25 Pack

Product Description

The TWECO 1160-1138 is a tapered MIG contact tip designed for 0.052-inch aluminum welding wire. It features a 0.064-inch nominal bore diameter, a 0.375-inch OD, and measures 1.5 inches in length. The tip is machined from 122 DHP copper alloy tubing using extrusion or gun-drilling methods, producing a consistent, smooth inside diameter surface held to a tolerance of plus or minus 0.003 inches. Thread size is M8 x 1.25-6g. Licensed welding technicians and MIG gun operators install this tip as a consumable replacement on MIG welding guns rated up to 600 amps. Each tip is marked with the part number and wire diameter for quick field identification. Sold in packs of 25.

This contact tip is suited for standard MIG welding applications up to 600 amps. The threaded design ensures consistent contact with a compatible gas diffuser when installed on a MIG gun. The twist-lock feature allows the tip to lock in place without thread engagement concerns. When the primary wear point is reached, a quarter-turn clockwise rotation exposes a new wear point, effectively doubling the service life of the tip. The thick-walled copper construction acts as a heat sink, drawing heat away from the arc source during operation. Compatible with slip-on and thread-on nozzle styles.

Key Features

• Machined from 122 DHP copper alloy tubing for consistent, smooth bore surface
• Inside diameter tolerance held to plus or minus 0.003 inches for reliable wire feed
• Twist-lock design locks tip in place and increases electrical contact surface area
• Rotatable wear point extends tip life — quarter-turn clockwise reveals a fresh wear surface
• Thick-walled design conducts heat away from the arc source
• Each tip stamped with part number and wire diameter for easy identification
• Rated for standard welding applications up to 600 amps

Compatibility

Designed for use with MIG guns accepting M8 x 1.25-6g threaded contact tips and compatible with slip-on or thread-on nozzle styles rated up to 600 amps.

Installation Notes

Installation is performed by welding technicians during routine MIG gun consumable replacement. Power down and disconnect the welding machine before servicing the gun neck or replacing contact tips. Ensure the gas diffuser threads are clean and undamaged before seating the tip. Do not overtighten — the twist-lock interface is designed to seat with hand engagement and a quarter-turn lock.

Technical Specifications

• Wire Diameter: 0.052 inches
• Bore Diameter (Nominal ID): 0.064 inches
• ID Tolerance: plus or minus 0.003 inches
• Outer Diameter: 0.375 inches
• Length: 1.5 inches
• Thread Size: M8 x 1.25-6g
• Maximum Amperage: 600 amps
• Material: 122 DHP copper alloy
• Weight: 0.04 pounds
• Quantity per Pack: 25
• UOM: Each

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1160-1138