This replacement head nut secures NM nozzles to torch bodies securely. The brass construction ensures durability and heat resistance. The standard 3/8" BSP thread fits most NM torches. The knurled edge allows for easy hand-tightening. The precision-machined threads ensure leak-free performance. The compact design (1" diameter) works in confined areas. Ideal for maintaining and repairing NM torch systems. The smooth interior surface prevents nozzle damage during installation. A simple but essential component for oxy-fuel equipment maintenance.