National Stock Number
3040-00-420-4921
National Stock Number (NSN) 3040-00-420-4921, or NIIN 004204921, (brake shoe) was assigned March 7, 1969 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 2530000227133.
There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is 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 7 contracts issued for this part number, with 7 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 6 different suppliers. The last contract numbers awarded were: SPE7M124V1493, SPE7M123V8246, SPE7M117P8588, SPE7M117P8588, SPM7M313V1482. The total value of the awarded contracts has been US$ 17,189.90.
This NSN is somewhat common among different platforms, belonging to 5 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 high volatility, with an estimated forecasted value of US$ 3,849. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Mar 02, 2019, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 30489. [A METAL ITEM IN THE SHAPE OF AN ARC, WITH OR WITHOUT A REPLACEABLE FRICTION LINING ON THE SURFACE OF THE SHOE ARC. WHEN ACTUATED BY A CAM, LEVER AND/OR HYDRAULIC CYLINDER, IT EXERTS PRESSURE ON A DRUM OR WHEEL. ALSO, SEE BRAKE, SHOE TYPE.]. This item does not have a nuclear hardened feature but does have other critical feature(s) 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 3040004204921 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.