CGA-580 Brass Inlet Nut for Argon, Helium, Nitrogen Regulators

Reliable Replacement Hardware for MIG and TIG Welders

Keep your welding operations running smoothly with the Western Enterprises WES92 CGA-580 Inlet Nut. For welders utilizing MIG or TIG processes, a secure connection to your shielding gas cylinder is the first step in achieving a quality weld. This brass inlet nut is the standard hardware used to connect your gas regulator or flowmeter to Argon, Helium, and Nitrogen tanks (CGA-580 valves). Over time, the threads on regulator nuts can become worn, cross-threaded, or rounded off due to frequent cylinder changes. Instead of replacing an entire expensive regulator, simply swapping out the damaged nut with the WES92 restores your equipment to safe working order.

Designed for the rigors of the welding shop, this nut is built from solid brass to withstand the high pressures of full gas cylinders, rated up to 3000 PSIG. It features a standard right-hand thread (.960"-14 NGO) that screws directly into the cylinder valve, pulling the regulator nipple tight against the seat to create a gas-tight seal. Leaking shielding gas not only wastes money but can also lead to porosity in your welds and atmospheric contamination. Ensuring your inlet nut is in good condition and properly tightened is a simple maintenance step that protects your weld quality.

The WES92 features a large 1-1/8" hex head, giving you plenty of surface area to grip with a wrench for a secure fit. It is compatible with most major brands of welding regulators that utilize the CGA-580 standard for inert gases. Whether you are setting up a pure Argon tank for TIG welding aluminum or an Argon/CO2 mix for MIG welding steel (check your specific cylinder valve type, as some mixes use different CGAs, though pure Argon and many inert mixes use 580), this nut is a toolbox essential.

Don't let a stripped nut halt your production. This high-quality replacement part ensures you can hook up your gas and get back to burning wire quickly. It is easy to install: simply slide it over your existing regulator nipple (if the nipple design allows) or use it during the assembly of a new tailpiece. Always ensure threads are clean and free of debris before connecting to a high-pressure cylinder.