National Stock Number (NSN) 5990-00-068-4324, or NIIN 000684324, (synchro,control transformer) was assigned July 13, 1967 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 4 stock numbers: 5990008999836, 5990010088688, 5990006776469, 5990006440126.
There are 24 manufacturer part numbers associated with this NSN. 11 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 12 suppliers. Today, 9 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 a year. There have been 12 contracts issued for this part number, with 12 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7L325P0562, SPE7M121P2538, SPE7M121P2538, SPE7MC19V6696, SPE7MC19V6696. The total value of the awarded contracts has been US$ 812,130.66.
This NSN is very common among different weapons systems, belonging to 30 different platforms.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 14,844. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Nov 03, 2017, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is controlled by QPL procedures. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 15289. [A SYNCHRO CONSISTING OF A STATOR AND ROTOR INDUCTIVELY COUPLED. THE ELECTRICAL OUTPUT OF THE ROTOR IS DEPENDENT UPON BOTH THE POSITION OF THE ROTOR AND THE ELECTRICAL INPUT TO THE STATOR FROM A TRANSMITTER SYNCHRO OR A DIFFERENTIAL SYNCHRO. DOES NOT INCLUDE VARIABLE RESISTORS, GONIOMETERS, OR VARIABLE TRANSFORMERS.]. 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 5990000684324 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.