National Stock Number
5977-01-163-9555
National Stock Number (NSN) 5977-01-163-9555, or NIIN 011639555, (holder,electrical contact brush) was assigned October 10, 1983 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 3 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Sep 19, 2018. There have been 6 contracts issued for this part number, with 9 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 5 different suppliers. The last contract numbers awarded were: SPE4A618PQ668, SPE4A114G0007, SPE4A614M6624, SPE4A613MM986, SPE4A613MM986. The total value of the awarded contracts has been US$ 210,467.13.
This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.
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 low volatility, with an estimated forecasted value of US$ 34,032. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Oct 04, 2016, this NSN's acquisition method was noted as: Acquire only from the prime contractor although the engineering data identifies the Commercial and Government Entity Code (CAGE) and part number of a source other than the prime contractor. The data or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 02937. [A HOLDER DESIGNED TO ACCOMMODATE AND POSITION A BRUSH AGAINST A COMMUTATOR OR COLLECTOR RING. ALSO INCLUDES ITEMS CONSISTING OF TWO OR MORE BRUSH HOLDERS (BOXES) CAST AS AN INSEPARABLE UNIT. MAY INCLUDE FACILITIES FOR APPLYING PRESSURE TO THE BRUSH(ES) AND MAY ALSO BE FURNISHED WITH THE BRUSH(ES). SEE ALSO HOLDER ASSEMBLY, ELECTRICAL CONTACT BRUSH.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5977011639555 does not contain precious metals.
This NSN is associated to Schedule B 8545900000: electrical carbon or graphite articles,nesoi. The Schedule B End Use is listed as electric apparatus. NAICS classification category 335991: carbon and graphite product manufacturing.
This information was last updated on Jul 01, 2025.