An NPT‑M x NPT‑M male hex nipple is a precision-engineered pipe fitting designed to connect two female NPT‑threaded ports or components in a straight-line configuration. It features male National Pipe Taper (NPT‑M) threads on both ends and a hexagonal section in the middle for easy tightening or removal with a wrench. This design allows for secure, leak-resistant connections in piping systems where a short, robust extension or coupling is required.
These fittings are widely used in hydraulic, pneumatic, instrumentation, and fluid systems across industries such as oil and gas, chemical processing, power generation, and manufacturing. The tapered NPT threads create a reliable seal when used with thread sealant or PTFE tape, making the fitting suitable for high-pressure applications.

