National Stock Number
5977-99-535-3687
National Stock Number (NSN) 5977-99-535-3687, or NIIN 995353687, (ring,electrical contact) has an unknown assigned date. 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, 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 a year. There have been 5 contracts issued for this part number, with 4 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: SPE4A623P3522, SPE4A623P3524, SPE4A616MF572, SPM4A612MBC38, SPM4A612MBC38. The total value of the awarded contracts has been US$ 615,237.98.
This NSN is unique to one weapons system.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 02474. [AN ITEM CONSISTING OF A CONTINUOUS ELECTRICALLY CONDUCTIVE MATERIAL OF CIRCULAR OR RING SHAPE SPECIFICALLY DESIGNED TO BE USED IN CONJUNCTION WITH A CONTACT BRUSH TO ESTABLISH AN ELECTRICAL CIRCUIT BETWEEN A ROTATING ITEM AND A STATIONARY ITEM. SEE ALSO COMMUTATOR.].
This information was last updated on Feb 02, 2026.