This replacement tail nut secures gas hoses to various fittings. The brass construction provides excellent durability and corrosion resistance. The 3/8" BSP thread fits standard hose connections. The knurled edge allows for hand-tightening when space permits. The precision-machined threads ensure leak-free performance. The compact design (1" diameter) works in confined areas. Ideal for repairing or assembling oxy-fuel gas systems. The smooth interior surface prevents hose damage during installation. Compatible with most standard gas hose types. A simple but essential component for maintaining secure gas connections in welding and cutting setups.