National Stock Number (NSN) 5990-00-905-9556, or NIIN 009059556, (synchro,receiver-transmitter) was assigned June 22, 1966 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 5 stock numbers: 5990005030383, 5990009462025, 5990008925277, 5990007173687, 5990007817368.
There are 18 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 6 suppliers. Today, 6 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 28 contracts issued for this part number, with 47 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 4 different suppliers. The last contract numbers awarded were: SPE7M225P2494, SPE7M225P2494, SPE7M225P1751, SPE7M225P1751, SPE7M225P0576. The total value of the awarded contracts has been US$ 7,522,768.79.
This NSN is very common among different weapons systems, belonging to 43 different platforms.
There has been a moderate amount of demand for this national stock number. Globally, demand for this NSN has originated from 6 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 01, 2020, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 27218. [A SYNCHRO HAVING A DUAL PURPOSE. IT MAY BE USED IN APPLICATIONS REQUIRING EITHER A RECEIVER OR TRANSMITTER. FOR SYNCHROS HAVING A SINGLE PURPOSE, SEE SYNCHRO, RECEIVER AND SYNCHRO, TRANSMITTER.]. This item does not have a nuclear hardened feature but does have other critical feature(s) 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 5990009059556 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.