8-5015 - Thermal Dynamics Oxygen B-Nut 9/16-18 RH

Reliable Oxygen Connections with Thermal Dynamics

The Thermal Dynamics 8-5015 Oxygen B-Nut is an essential component for maintaining secure and leak-free gas connections in your welding or cutting setup. Manufactured to precise standards, this nut features the industry-standard B-Size configuration with 9/16"-18 Right Hand (RH) threads, making it universally compatible with most oxygen regulators, hoses, and equipment inlets used in North America.

Constructed from high-quality brass, this nut offers excellent resistance to corrosion and wear, ensuring a long service life even in demanding industrial environments. Whether you are repairing a damaged hose end, replacing a worn fitting on a plasma cutter, or setting up a new oxy-fuel station, using genuine parts like the 8-5015 ensures safety and performance. A secure gas connection is critical for preventing leaks that can lead to hazardous situations or wasted gas.

This replacement nut is designed for straightforward installation. Its hexagonal exterior allows for easy tightening with standard wrenches, ensuring a tight seal against the nipple or gland (sold separately). As a genuine Thermal Dynamics part, it meets strict quality control specifications, providing peace of mind for professional welders and fabricators who rely on their equipment daily.

Key Features

• Standard Compatibility: Fits standard B-Size oxygen fittings (CGA 022 style).


• Durable Material: Machined from solid brass for strength and oxidation resistance.


• Safety First: Ensures a tight, leak-proof seal when used with appropriate nipples.