Tweco 1160-1103 Mig Contact Tip 0.040 in 16 Series Heavy Duty

Product Description

The TWECO 1160-1103 is a 16 Series Standard Heavy Duty MIG contact tip designed for 0.040-inch diameter welding wire with a 0.048-inch nominal bore. At 1.5 inches in length, it is machined from extruded or gun-drilled 122 DHP copper alloy tubing, delivering a consistent, smooth inside diameter held to plus or minus 0.003 inches tolerance. The thick-walled construction acts as a heat sink, drawing heat away from the arc source. This contact tip carries an M8 x 1.25-6g thread and a 0.375-inch OD. It is installed and serviced by certified welders and MIG gun technicians working in heavy-duty industrial and fabrication environments rated up to 600 amps.

This tip is suited for heavy-duty MIG welding applications up to 600 amps. It is compatible with Tweco Spray Master 350-600 A MIG guns and Tweco No. 6 MIG guns, as well as specific compatible MIG gun series. The twist-lock design engages the gas diffuser without relying on threads alone, increasing the electrical contact surface area between the tip and diffuser. When the active wear point is reached, a quarter-turn clockwise rotation exposes a new wear point, effectively doubling service life before replacement is needed. Sold in packs of 25, this tip is a practical consumable for high-volume welding operations.

Key Features

• 0.048-inch nominal bore for 0.040-inch wire with inside diameter tolerance held to plus or minus 0.003 inches
• Machined from 122 DHP copper alloy for excellent electrical conductivity and thermal performance
• Thick-walled design acts as a heat sink, conducting heat away from the arc source
• Twist-lock engagement increases electrical contact surface area with the gas diffuser
• Quarter-turn clockwise rotation reveals a second wear point, doubling tip life
• Part number and wire diameter marked on each tip for quick field identification
• Sold as 25 per pack for high-volume consumable restocking

Compatibility

Designed for use with Tweco Spray Master 350-600 A MIG guns and Tweco No. 6 MIG guns, as well as specific compatible MIG gun series. Compatible with slip-on or thread-on nozzle styles.

Installation Notes

Installation and replacement should be performed by a qualified welder or MIG gun technician. Power down and de-energize the welding system before servicing the contact tip. Ensure the tip is fully seated and twist-locked against the gas diffuser to maintain proper electrical contact. Inspect the bore and wear point regularly and rotate to the second wear position before discarding.

Technical Specifications

• Wire Diameter: 0.040 inches
• Bore (Nominal ID): 0.048 inches
• Inside Diameter Tolerance: plus or minus 0.003 inches
• Outside Diameter: 0.375 inches
• Length: 1.5 inches
• Thread Size: M8 x 1.25-6g
• Material: 122 DHP Copper Alloy
• Maximum Amperage: 600 amps
• Weight: 0.05 pounds
• Sold As: 25 per pack

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1160-1103