Tweco 1140-1106 Mig Contact Tip 0.062 in 1.5 in 25 Pack

Product Description

The TWECO 1140-1106 is a 14 Series Standard Duty MIG contact tip designed for 0.062 inch (1/16 inch) wire diameter and a 0.073 inch nominal bore. Measuring 1.5 inches in length with a 1/4 inch-28 UNF-2A thread, it is machined from 122 DHP copper alloy tubing — either extruded or gun-drilled — to deliver a consistent, smooth inside diameter held to a tolerance of plus or minus 0.003 inches. The thick-walled construction acts as a heat sink, drawing heat away from the arc. Licensed welding professionals and MIG gun technicians install this tip as a consumable replacement during routine torch maintenance on setups rated up to 400 amps. Sold in a pack of 25.

This contact tip is suited for standard MIG welding applications up to 400 amps. It is compatible with Tweco No. 2, No. 3, and No. 4 MIG guns as well as specific Tweco MIG gun series that accept the 14 Series tip. The tip accommodates slip-on or thread-on nozzle styles and is compatible with Tweco gas diffusers requiring the 1/4 inch-28 UNF-2A threaded interface. Each tip is stamped with the part number and wire diameter for fast field identification when swapping consumables during production welding or MIG gun servicing.

Key Features

• 0.062 inch wire diameter with 0.073 inch nominal bore held to plus or minus 0.003 inch tolerance
• Machined from 122 DHP copper alloy tubing for consistent, smooth inside diameter surface
• Thick-walled design functions as a heat sink to conduct heat away from the arc source
• Threaded style ensures positive contact with gas diffuser; twist-lock engagement increases electrical conductive surface area
• Quarter-turn clockwise rotation exposes a new wear point, effectively doubling tip service life
• Part number and wire diameter stamped on each tip for quick identification
• Sold in packs of 25 for high-volume production or shop stocking

Compatibility

Compatible with Tweco No. 2, No. 3, and No. 4 MIG guns and specific Tweco MIG gun series accepting 14 Series Standard Duty contact tips with a 1/4 inch-28 UNF-2A threaded connection. Fits both slip-on and thread-on nozzle styles.

Installation Notes

Installation is performed by qualified welding technicians or MIG gun service personnel. Always de-energize the welding power source and allow the gun to cool before replacing contact tips. Thread the tip into the gas diffuser by hand and snug with the appropriate wrench — do not overtighten, as this can distort the bore. Ensure the nozzle style (slip-on or thread-on) is matched to the existing gun configuration before installation.

Technical Specifications

• Wire Diameter: 0.062 inches
• Bore (Nominal ID): 0.073 inches
• ID Tolerance: plus or minus 0.003 inches
• Length: 1.5 inches
• Outer Diameter: 0.25 inches
• Thread Size: 1/4 inch-28 UNF-2A
• Maximum Current Rating: 400 amps
• Material: 122 DHP Copper Alloy
• Weight: 0.02 pounds
• Quantity per Pack: 25
• UOM: Each

Standard Information

• Brand: TWECO
• Manufacturer Part Number: 1140-1106