Naldoni e Biondi NBTFPLM1815 is a male-threaded protective plug in the NBTFPLM cylinder-parts family. The component uses Nylon PA 6 and an M18 × 1.5 metric thread. The construction has the thread on the outside of the lower shank: its hollow core is not a female threaded connection.
The plug protects the connection during handling and storage. It has no specified pressure-retaining service rating. Drawing dimensions: A as the outside diameter, B as the spanner dimension and C/D as separate height segments; no overall-height or pressure-sealing claim is specified.
