Harris CGA-580 Inlet Assembly with 1/2" MNPT Nipple

Reliable Gas Connections for Professional Welders

For welders and fabricators, a consistent flow of shielding gas is non-negotiable. The Harris 9103616 Inlet Nut & Nipple is the heavy-duty replacement part you need when your regulator's inlet threads get stripped or the nut becomes rounded off from years of cylinder changes. Designed specifically for inert gases like Argon, Helium, and Nitrogen, this assembly features the standard CGA-580 connection found on almost all shielding gas cylinders used in TIG and MIG welding processes.

Why replace the whole regulator when you can just replace the inlet? This assembly includes both the tightening nut and the 2.5-inch nipple stem. The nipple is equipped with a 1/2" Male NPT thread on the regulator side, making it compatible with a wide variety of heavy-duty regulators and custom manifold setups that utilize this standard port size. The 2.5-inch length is perfectly sized to give you enough room to wrench on the connection without banging your knuckles against the regulator body or the gas cylinder, a small detail that makes a big difference during daily tank swaps.

Installation and Safety
Installing the Harris 9103616 is straightforward. Ensure your regulator body has a 1/2" NPT female port. Apply a suitable thread sealant or Teflon tape to the NPT threads (the tapered end going into the regulator) to ensure a gas-tight seal. Note: Never apply tape or sealant to the CGA-580 bullnose end that connects to the cylinder; this side relies on a clean metal-to-metal seat. Once installed, this brass fitting provides a secure, leak-free link between your high-pressure tank and your equipment, preventing gas waste and ensuring your weld pool stays protected.

Whether you are building a custom gas distribution system for your shop or simply repairing a trusty old Harris regulator, this high-quality brass component ensures you can get back to welding quickly and safely. Keep a spare in your toolbox to avoid downtime caused by damaged fittings.