National Stock Number
6540-01-253-8169
National Stock Number (NSN) 6540-01-253-8169, or NIIN 012538169, (insert,optical,chemical-biological mask) was assigned April 25, 1987 in the Federal Logistics Information System (FLIS). NIIN 012538169 was cancelled on August 2, 2007, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers 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. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 22347. [AN ITEM SPECIFICALLY DESIGNED TO FIT INTO A MASK, CHEMICAL-BIOLOGICAL. WITH CORRECT LENS INSERTED, IT CAN PROVIDE SPECTACLES FOR PERSONNEL REQUIRING VISUAL CORRECTIONS.]. 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 6540012538169 does not contain precious metals.
This information was last updated on Jul 01, 2025.