National Stock Number
4820-15-155-5387
National Stock Number (NSN) 4820-15-155-5387, or NIIN 151555387, (ball,check) has an unknown assigned date. 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 a year. There have been 2 contracts issued for this part number, with 2 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE7MC22V3312, SPE7M115VH144, SPE7M115VH144. The total value of the awarded contracts has been US$ 1,551.11.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
There has been very little 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) 40243. [A SPHERICAL SHAPED DEVICE THAT MAY BE OF SOLID OR HOLLOW CONSTRUCTION. IT IS DESIGNED TO SEAT IN AN OPENING THEREBY PREVENTING THE PASSAGE OF FLUID. IT MAY BE USED WITH A SPRING ENABLING THE BALL TO BECOME UNSEATED AT A PREDETERMINED PRESSURE AS EXERTED BY THE FLUID FLOW AND TO BECOME RESEATED IN THE ABSENCE OF FLUID PRESSURE. FOR VALVE BALLS THAT INCLUDE PORTS SEE BALL, VALVE, PORTED.].
This information was last updated on Jan 19, 2026.