National Stock Number
5520-01-218-3107
National Stock Number (NSN) 5520-01-218-3107, or NIIN 012183107, (frame,observation window) has an unknown assigned date. NIIN 012183107 was cancelled on May 7, 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) 60504. [A FLAT RIGID ITEM PROVIDED WITH HOLES OR SIMILAR MEANS FOR ATTACHING TO A CONTAINER FOR THE PURPOSE OF HOLDING AN OBSERVATION WINDOW IN PLACE.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5520012183107 does not contain precious metals.
This information was last updated on Aug 01, 2025.