A hex plug BSPP‑M is a precision-engineered pipe fitting designed to seal or close the end of a female BSPP-threaded port or pipe. It features male British Standard Pipe Parallel (BSPP‑M) threads and a hexagonal head for easy tightening or removal with a wrench. The BSPP end is typically sealed using an O-ring or bonded washer, providing a reliable, leak-resistant connection for fluid or gas systems.
Hex plugs are commonly used in hydraulic, pneumatic, instrumentation, and fluid systems across industries such as oil and gas, chemical processing, power generation, and industrial manufacturing. They are ideal for applications requiring secure closure of unused BSPP-threaded ports under high pressure and demanding operating conditions

