Answer
Mar 12, 2025 - 12:37 PM
NPSM stands for National Pipe Straight Mechanical, which refers to a standard for straight pipe threads used in mechanical and low-pressure applications. The standard for NPSM threads is defined by ANSI/ASME B1.20.1, specifying the dimensions, tolerances, and thread profile for these types of connections to ensure compatibility and proper sealing. Unlike tapered threads, NPSM threads are straight, meaning they do not provide a seal through thread interference but typically require a gasket or O-ring for sealing.
