National Stock Number
5999-01-623-7866
National Stock Number (NSN) 5999-01-623-7866, or NIIN 016237866, (cooling unit,electronic equipmen) was assigned December 2, 2013 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number 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, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is unique to one weapons system.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 02, 2020, 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. This part is a commercial/non-developmental/off-the-shelf-item. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 66977. [A UNIT DESIGNED TO GENERATE AND CIRCULATE COOL AIR FOR THE PURPOSE OF MAINTAINING ELECTRONIC EQUIPMENT AT A SPECIFIC OPERATING TEMPERATURE. IT INCLUDES A BLOWER, POWER CONDITIONER, AIR PLENUM, AND POWER HOUSING. IT CAN INCLUDE AN ELAPSED TIME INDICATOR TO INDICATE THE CUMULATIVE NUMBER OF OPERATING HOURS. THE UNIT PROVIDES STATUS AND CONTROL VIA THE POWER SUPPLY ASSEMBLY. EXCLUDES:COOLER, AIR, ELECTRONIC EQUIPMENT; COOLER, FLUID, ELECTRONIC EQUIPMENT; AND FAN (AS MODIFIED).]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5999016237866 does not contain precious metals.
This NSN is associated to Schedule B 8543909000: electrical machines and apparatus parts, nesoi. The Schedule B End Use is listed as electric apparatus. NAICS classification category 335999: all other miscellaneous electrical equipment and component manufacturing.
This information was last updated on Jul 01, 2025.