National Stock Number
5855-01-555-1381
National Stock Number (NSN) 5855-01-555-1381, or NIIN 015551381, (cooler-dewar group) was assigned August 30, 2007 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 2 suppliers. Today, 2 suppliers are listed as Active suppliers 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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 09, 2013, this NSN's acquisition method was noted as: Acquire, for the first time, directly from the actual manufacturer rather than the prime contractor who is not the actual manufacturer. The Government does not have adequate data, lacks rights to data, or both, needed to purchase this part from additional sources. Valid AMCs: 1, 2, 3, 4 and 5.
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 5855015551381 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 Jul 01, 2025.