National Stock Number
5990-00-644-0101
National Stock Number (NSN) 5990-00-644-0101, or NIIN 006440101, (synchro,differential transmitter) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
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 Apr 02, 1991, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 02071. [A SYNCHRO, THE ROTOR OF WHICH IS MECHANICALLY POSITIONED FOR MODIFYING ELECTRICAL ANGULAR INFORMATION, RECEIVED FROM A TRANSMITTER SYNCHRO AND TRANSMITTING TO RECEIVER SYNCHRO OR CONTROL TRANSFORMER SYNCHRO ELECTRICAL INFORMATION CORRESPONDING TO THE SUM OR DIFFERENCE OF THE ELECTRICAL INPUT ANGLE AND ITS ROTOR POSITION ANGLE. DOES NOT INCLUDE VARIABLE RESISTORS, GONIOMETERS, VARIABLE TRANSFORMERS, OR ITEMS WITH DIALS.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5990006440101 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.