National Stock Number
5855-01-491-4623
National Stock Number (NSN) 5855-01-491-4623, or NIIN 014914623, (cooler-dewar group) was assigned October 23, 2001 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 4 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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 02, 2013, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 40948. [A GROUP OF ELECTRONIC ITEMS CONSISTING OF A CRYOGENIC COOLER TO REDUCE THE OPERATING TEMPERATURE OF THE DETECTOR-DEWAR TO A PROPER LEVEL FOR A SPECIFIC BAND OF THERMAL DETECTION. THIS ALLOWS THE DETECTOR-DEWAR TO FUNCTION WHEN PLACED IN A NIGHT VISION SYSTEM. THE GROUP MAY INCLUDE ACCESSORY ITEMS SUCH AS THERMAL CONDUCTOR, BELLOWS, AND ASSOCIATED FASTENING HARDWARE.]. 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 5855014914623 does not contain precious metals.
This NSN is associated to Schedule B 9014900000: parts & accessories for direction finding compasses and other navigational instruments and appliances. The Schedule B End Use is listed as marine engines, parts. NAICS classification category 334511: search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing.
This information was last updated on Aug 01, 2025.