639870 - ESAB Brass Adapter 5/16-24 Female to 7/16-20 Female

Reliable Connections for Your Welding Setup

In the world of precision welding, the integrity of your equipment connections is just as important as the weld itself. The ESAB 639870 Adapter is a specialized brass fitting designed to solve compatibility issues between gas or water lines and your welding machine or torch. Whether you are setting up a new TIG rig, replacing worn-out components, or customizing a specific hose configuration, having the right adapter is the key to a safe and efficient workflow.

This particular adapter features a 5/16"-24 Female thread on one side and a 7/16"-20 Female thread on the other. This specific combination is often required when bridging the gap between different standards of TIG torch power cables, gas hoses, or water cooling lines. Manufactured from high-quality brass, this component offers excellent resistance to corrosion and wear, ensuring that it stands up to the rigors of an industrial environment. The precision machining guarantees smooth threading, allowing for a tight, secure seal that prevents dangerous gas leaks or messy water drips.

Using the correct adapter not only protects your equipment but also ensures consistent shielding gas flow, which is critical for weld quality. A poor connection can lead to porosity in your welds or overheating of your torch if coolant flow is restricted. With the ESAB 639870, you can trust that your connections are solid. It is an essential spare part for any maintenance shop or professional welder's toolkit, providing the versatility needed to keep production running smoothly without delays caused by mismatched fittings.

Key Benefits

• Durability: Solid brass construction withstands mechanical stress and resists oxidation.


• Precision Fit: Accurately cut threads ensure a secure, leak-proof seal every time.


• Versatility: Solves common connection headaches between 5/16" and 7/16" fittings.