Answer
Mar 12, 2025 - 12:55 PM
NPSM fitting refers to pipe fittings that use the National Pipe Straight Mechanical (NPSM) thread standard. NPSM threads are straight (parallel) and are typically used in applications where a mechanical seal is created with a gasket or an O-ring, rather than by the threads themselves, which is different from tapered threads that seal by wedging. These fittings are commonly used in hydraulic systems and other applications requiring reliable, leak-proof connections.
