3/8 x 16 x 1.5 Female National Pipe Thread x Male Metric AdapterThe 3 8 x 16 x 1. 5 Female National Pipe Thread x Male Metric Adapter is a threaded fitting designed to connect Female National Pipe Thread (FNPT) to Male Metric (ML) threads. It enables compatibility between imperial (NPT) and metric (ML) systems, commonly used in hydraulic, pneumatic, automotive, and industrial fluid applications. Specification Details TYPE Female NPT to Male Metric Adapter DESIGN Tapered thread, ensures a secure leak proof