The Tweco 14-40 Contact Tip is a fundamental consumable for industrial MIG welding operations utilizing 0.040-inch (1.0mm) wire. Part of the widely adopted 14 Series, this standard duty contact tip is engineered to provide consistent electrical transfer and reliable arc initiation in general fabrication environments. Manufactured from high-grade copper alloy, it offers a balance of durability and conductivity essential for maintaining production efficiency.
This specific tip features a 1/4"-28 UNF thread, making it compatible with standard gas diffusers found on Tweco No. 1, No. 2, No. 3, and No. 4 MIG guns, as well as numerous compatible systems from other manufacturers like Lincoln Electric (Magnum series). The 1.5-inch overall length ensures proper stick-out and nozzle relationship when used with standard 14-series nozzles and diffusers.
Supplied in a package of 25, the 1140-1103 SKU allows workshops to maintain adequate inventory levels of high-turnover consumables. Regular replacement of contact tips is critical for preventing burn-back, micro-arcing, and erratic wire feeding caused by keyholing or spatter accumulation. These tips are machined with tight tolerances to ensure the bore diameter (typically 0.044" for 0.040" wire) provides optimal electrical contact without binding the wire.
Key Specifications:
| Additional Information |
|---|
| Brand:Tweco |
| Item:Contact Tip |
| Wire Size:0.040" (1.0 mm) |
| Packaging Description:25 Per Ea |
| Fits Which Model:Tweco #1, #2, #3, #4 MIG Guns |
| Series:14 Series |
| Material:Copper Alloy |
| Thread Size:1/4"-28 UNF |
| Length:1.5 in |
| Bore Diameter:0.044" (1.1mm) |
| Part Number:1140-1103, 14-40 |
