Allied Medical LLC 12-80-4005 is a high-quality DISS female hex nut and stem assembly designed for secure medical gas connections. It features a standardized hex nut that allows for a wrench-tightened connection to oxygen DISS male outlets, transitioning into a 1/4" hose barb for flexible tubing attachment. This fitting is essential for creating custom hose assemblies used with flowmeters, nebulizers, and other respiratory therapy equipment. Its heavy-duty chrome-plated brass construction ensures long-term durability and resistance to frequent clinical use. The gas-specific threading ensures that only oxygen-related components can be integrated, maintaining strict clinical safety protocols and preventing accidental cross-connection in high-pressure medical environments.