12401857 - Tweco VNM-50 Velocity MIG Nozzle 1/2 Inch Bore (2-Pack)

Product Overview: Tweco Velocity VNM-50 MIG Nozzle

The Tweco Velocity VNM-50 (SKU: 12401857) is a high-performance MIG welding nozzle designed specifically for the Velocity and Velocity2 consumable platforms. Sold in a package of two, these nozzles are engineered to meet the rigorous demands of industrial welding environments while providing compatibility with Tweco Spray Master MIG guns that have been converted to or originally equipped with Velocity consumables. The VNM-50 model features a 1/2-inch (12.7 mm) bore orifice, which is a standard size for a wide range of fabrication tasks, balancing gas coverage with accessibility.

Technically, the VNM-50 is rated for welding applications up to 250 Amps. This amperage rating makes it ideal for light to medium-duty fabrication, automotive repair, and general maintenance welding. One of the defining characteristics of this nozzle is its 1/8-inch (3.2 mm) recessed tip geometry. This recess places the contact tip slightly back inside the nozzle, providing a physical shield that helps prevent the tip from shorting against the workpiece during tight maneuvering or when using short-circuit transfer modes. It also assists in maintaining a consistent stick-out length for the operator.

The Velocity platform utilizes a unique threadless design, allowing the nozzle to be secured with a simple twist, which significantly reduces downtime associated with consumable changeovers. Furthermore, the VNM-50 is self-insulated, meaning the electrical insulation is integrated directly into the nozzle body. This eliminates the requirement for a separate insulator part, simplifying inventory management and reducing the number of components required at the welding station. These nozzles are designed to function seamlessly with VTM series contact tips, ensuring optimal electrical conductivity and arc performance.

Key Technical Specifications:

• Part Number: 12401857 (VNM-50)
• Bore Size: 1/2"
• Tip Relationship: 1/8" Recess
• Amperage Capacity: 250 A
• System: Velocity / Velocity2