A BSPP‑F x BSPP‑F female hex coupling is a precision-engineered pipe fitting designed to connect two female BSPP-threaded ports of the same size. It features female BSPP threads on both ends and a hexagonal body for easy tightening or removal with a wrench, ensuring a secure, leak-proof connection in piping or instrumentation systems.
These couplings are widely used in hydraulic, pneumatic, instrumentation, and fluid systems across industries such as oil and gas, chemical processing, manufacturing, and power generation. The parallel BSPP threads, typically sealed with an O-ring or bonded washer, provide a reliable, high-pressure resistant connection for critical applications.

