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The Tweco 1160-1113 (16AS-364) contact tip is a specialized consumable designed for the professional welder working with 3/64" (1.2mm) aluminum wire. Part of the renowned Tweco 16 Series, this standard-length tip is a staple in the industry for use with Tweco Classic No. 3 and No. 4 MIG guns, as well as many compatible aftermarket torches. The "AS" designation stands for Aluminum Standard, indicating that the internal geometry is specifically machined to handle the physical properties of aluminum filler metals.
Aluminum wire has a higher coefficient of thermal expansion than steel. If a standard steel tip is used for aluminum welding, the wire can expand and bind within the tip as it heats, leading to burnback and wire feed stoppages. The 16AS-364 solves this by featuring a slightly larger internal diameter compared to its steel counterpart (16S-364), allowing for smooth wire passage even under high-heat conditions. This attention to detail helps maintain a consistent stick-out and arc length, which is critical for producing X-ray quality aluminum welds.
Each tip is machined from high-grade copper extrusion to ensure maximum durability and electrical efficiency. The 3/8"-24 UNF threads provide a tight, conductive connection to the gas diffuser, minimizing voltage drop at the contact point. This pack of 25 tips provides excellent inventory control for busy workshops, ensuring that a fresh tip is always available when the current one wears out. Regular tip replacement is essential for maintaining weld quality, and with this bulk pack, you can afford to change tips as soon as performance begins to degrade.
| Additional Information |
|---|
| Brand:Tweco |
| Item:Contact Tip |
| Wire Size:3/64" |
| Packaging Description:25 Per Ea |
| Fits Which Model:N/A |
| Series:16 Series |
| Material:Copper Alloy |
| Application:Aluminum Welding |
| Thread Size:3/8"-24 UNF |
| Bore Type:Aluminum (Oversized) |
