National Stock Number
2520-00-161-7633
National Stock Number (NSN) 2520-00-161-7633, or NIIN 001617633, (synchronizer,transmission) was assigned October 24, 1971 in the Federal Logistics Information System (FLIS). NIIN 001617633 was cancelled on October 9, 2002, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. 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 one supplier. Today, there are no suppliers 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 assigned to Item Name Code (INC) 36254. [A DEVICE USED IN MANUAL AUTOMOTIVE TRANSMISSIONS, DESIGNED TO EQUALIZE THE SPEED OF THE MATING PARTS BEFORE THEY ENGAGE. COMMON TYPES SUCH AS BLOCK TYPE, DISK AND PLATE TYPE, PLAIN TYPE OR PIN TYPE USE FRICTION TO SYNCHRONIZE THE MATING PARTS. THE MAIN FUNCTION IS TO HELP IN ENGAGING GEARS BY SYNCHRONIZING THE SPEEDS OF THE GEAR AND THE SHAFT BEFORE THE CONNECTION IS MADE.]. 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 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 2520001617633 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.