National Stock Number
2920-12-143-5256
National Stock Number (NSN) 2920-12-143-5256, or NIIN 121435256, (switch,lock,ignition) has an unknown assigned date. This NSN does not replace any other NSNs.
There are 12 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 7 suppliers. Today, 6 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over a year. There have been 10 contracts issued for this part number, with 10 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: SPE7L524V0484, SPE7L522V3160, SPE7L019V2178, SPE7L516V1934, SPE7L516V1934. The total value of the awarded contracts has been US$ 16,083.10.
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.
This NSN is assigned to Item Name Code (INC) 00402. [A SWITCH WHICH IS EXTERNALLY ACTUATED BY A DEVICE SUCH AS A KEY/CYLINDER LOCK TO ACTUATE A REMOTE LEVER OR ROD RACK TO ACTIVATE A REMOTE SWITCH. THE ACTUATION DEVICE MAY OR MAY NOT BE AN INTEGAL PART OF THE SWITCH. THE PRIMARY PURPOSE OF THE SWITCH IS TO OPEN AND CLOSE THE IGNITION CIRCUIT OF AN INTERNAL COMBUSTION ENGINE AND ACTUATE VARIOUS ACCESSORIES. EXCLUDES:SWITCH, ENGINE STARTER, ELECTRICAL AND SWITCH, LOCK.].
This information was last updated on Nov 21, 2025.