Western Enterprises 177 CGA-540 Oxygen Nut, Brass

Keep Your Oxygen Setup Secure

When you're out in the shop or on the job site, a stripped or damaged regulator nut can bring your work to a grinding halt. The Western Enterprises 177 is the standard replacement nut for your oxygen regulator or pigtail. If you've got an oxygen tank (CGA-540), this is the nut that connects your equipment to the valve. Made from heavy-duty brass, it's built to take the abuse of daily cylinder changes and wrenching without stripping out or cracking.

Safety is the number one priority when handling high-pressure oxygen. This nut features the correct right-hand threads to ensure you never accidentally hook it up to a fuel gas cylinder. It's designed to work perfectly with a standard oxygen nipple, pulling it tight against the cylinder valve to create a secure, leak-free seal. Don't risk leaks with worn-out fittings; swapping out a beat-up nut is a cheap and easy way to ensure your gas delivery system is safe and efficient.

This part is a must-have for any welder's spare parts kit. Whether you are fixing an old Victor, Harris, or Miller regulator, or building a new hose assembly for a manifold, the Western 177 fits the bill. It's the industry standard for a reason—simple, tough, and reliable. Just pair it with the correct nipple, tighten it down with your cylinder wrench, and you're ready to burn.