Steel Female Pipe Swivels (NPSM) 

Our steel female pipe swivels come in many configurations such as 1404 male pipe adapter, 1501 90° male pipe elbow, 1503 45° male pipe elbow, and many more. These pipe fittings have NPSM threads, which stands for National Pipe Straight Mechanical, that are designed to screw together and cause interference at the roots and crests of the threads. The thread deformations caused by the interference fit and the wrench tightening is designed to make a dry mechanical seal. Theses Fittings are not used with liquids.


Industrial Supply offers a multitude of items ranging from camlocks, hydraulic hose, industrial hose, pipe fittings, hydraulic quick couplers, gauges, and many more industrial type products. If you see something on the site that you would like to know more about, or if there is something that you were looking for in particular that’s not on the site, please contact us at (360) 734-6330 and we’ll be there to help you as we pride ourselves with “Service Being Our Most Important Product”.

  • 1501 90° Male Pipe Elbow
    Our 1501 90° male elbow come in a zinc plated steel and has NPTF/NPSM threads. The sizes range from 1/8" to 2". These are high pressure hydraulic fittings.
  • 1404 Male Pipe Adapter
    Our 1404 male pipe adapter come in a zinc plated steel and has NPTF/NPSM threads. The sizes range from 1/8" to 2". These are high pressure hydraulic fittings.
  • 1503 45° Male Pipe Elbow
    Our 1503 45° male elbow come in a zinc plated steel and has NPTF/NPSM threads. The sizes range from 1/8" to 2". These are high pressure hydraulic fittings.