National Stock Number
4240-01-100-1252
National Stock Number (NSN) 4240-01-100-1252, or NIIN 011001252, (regulator,air pressure,protective shelter) has an unknown assigned date. NIIN 011001252 was cancelled on May 6, 1997, 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 are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 20597. [AN ITEM CONSISTING OF A MANUALLY OPERATED SLIDING PANEL OR HINGED DOOR DESIGNED SPECIFICALLY TO REGULATE THE PRESSURE BETWEEN THE AIR LOCKS OF PROTECTIVE SHELTERS.]. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 4240011001252 does not contain precious metals.
This information was last updated on Jul 01, 2025.