National Stock Number
4220-01-561-7791
National Stock Number (NSN) 4220-01-561-7791, or NIIN 015617791, (regulator,breathing gas pressure,demand) was assigned March 18, 2008 in the Federal Logistics Information System (FLIS). NIIN 015617791 was cancelled on December 15, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 67375. [A REGULATOR DESIGNED TO DELIVER BREATHING GAS AUTOMATICALLY SUCH AS AIR, OXYGEN, MIXTURE, AND THE LIKE, WHEN THE USER INHALES. IT IS INTENDED FOR USE WITH BREATHING APPARATUS FOR DIVE AND/OR RESCUE. EXCLUDES:REGULATOR (1),OXYGEN,DEMAND.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4220015617791 does not contain precious metals.
This information was last updated on Aug 01, 2025.