4435 - Bernard Style 4435 Centerfire Head Assembly, 400-500 Amp, 10-Pack

High-Performance Bernard Style 4435 Head Assembly

The Bernard Style 4435 Head Assembly is a critical component designed for heavy-duty MIG welding applications. Engineered to be fully compatible with the Bernard Centerfire consumable system, this head assembly serves as the foundational interface between the MIG gun neck and the contact tip. It is specifically rated for high-amperage operations, comfortably handling 400 to 500 Amps, making it an ideal choice for industrial fabrication, heavy equipment manufacturing, and structural steel welding. The component is manufactured from high-grade brass, selected for its superior thermal and electrical conductivity properties, which are essential for maintaining arc stability and prolonging the lifespan of the front-end consumables.

One of the defining technical features of the 4435 head is its elliptical profile. This design is integral to the Centerfire system's functionality, allowing the contact tip to be locked into place by hand with a simple quarter-turn. This eliminates the need for threads on the contact tip itself, thereby preventing cross-threading issues and ensuring a large surface area for current transfer. The head assembly also plays a vital role in shielding gas distribution. Its geometry is optimized to work in conjunction with the gas diffuser (often integrated or seated within the nozzle assembly depending on the specific gun configuration) to provide laminar gas flow, reducing turbulence and minimizing the risk of porosity in the weld pool.

This product is supplied as a package of 10, providing a convenient inventory solution for high-volume welding environments. It is designed as a direct replacement for the OEM Bernard 4435 part and is compatible with a wide range of Bernard MIG guns, including the popular Q-Gun, S-Gun, and T-Gun series. By maintaining a fresh and conductive head assembly, operators can ensure consistent voltage at the arc and reduce the frequency of burn-backs caused by poor electrical contact.