040212 - Miller 040212 Flat Spot Welding Tips (Pair) for MSW/LMSW Series

Premium RWMA Class 2 Flat Spot Welding Tips

The Miller 040212 Flat Tips are a critical consumable component designed for precision resistance spot welding applications. Manufactured from RWMA Class 2 copper alloy, these tips are engineered to withstand the high thermal and mechanical stresses inherent in the spot welding process. Class 2 alloy is the industry standard for high-production spot welding of clean mild steel, low alloy steel, and stainless steel, offering a superior combination of electrical conductivity and physical hardness. This material composition ensures that the tips resist deformation (mushrooming) longer than softer alloys, maintaining consistent current density and weld nugget integrity over an extended service life.

These flat-faced tips are specifically designed for use with Miller's line of portable resistance spot welders, including the MSW-41, MSW-42, LMSW-52, and LMSW-52T models, as well as the Hobart HSW series. They are fully compatible with a range of tong assemblies, including Standard, TT-6, TT-9, and G-7 configurations. The flat tip geometry is particularly advantageous in applications where surface appearance is a priority, as it distributes the clamping force over a slightly larger area compared to pointed tips, reducing the depth of indentation on the workpiece surface. This makes them an excellent choice for visible panels or applications requiring a smoother finish.

Proper tip maintenance and selection are paramount for achieving reliable spot welds. Worn or pitted tips can lead to poor electrical contact, arcing, and weak welds. The Miller 040212 set provides a matched pair of high-quality replacement tips, ensuring that both the upper and lower electrodes provide equal pressure and current transfer. Whether utilized in HVAC duct fabrication, light gauge metal repair, or general industrial maintenance, these genuine Miller components ensure your portable spot welder operates at peak efficiency.

Technical Specifications:

• Material: RWMA Class 2 Copper Alloy
• Geometry: Flat Face
• Packaging: Sold as a Pair
• Compatibility: Miller MSW/LMSW Series, Hobart HSW Series