National Stock Number
1240-00-138-8438
National Stock Number (NSN) 1240-00-138-8438, or NIIN 001388438, (headrest,optical instrument) was assigned August 21, 1971 in the Federal Logistics Information System (FLIS). NIIN 001388438 was cancelled on April 29, 2010, 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) 22110. [AN ITEM FABRICATED FROM A CELLULAR RUBBER PAD, CEMENTED TO A RIGID OR SEMIRIGID BACKPLATE. IT IS USUALLY SHAPED TO FIT THE CURVATURE OF THE FOREHEAD OR A SINGLE BROW OF THE OBSERVER. IT IS DESIGNED TO BE MOUNTED ON SIGHTING DEVICES, SUCH AS PERISCOPES, TELESCOPE MOUNTS, RANGE FINDERS, AND THELIKE, TO PROTECT THE OBSERVER FROM VIBRATION AND/OR SHOCK WHILE SIGHTING.]. 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 1240001388438 does not contain precious metals.
This information was last updated on Jul 01, 2025.