National Stock Number
5340-01-184-3921
National Stock Number (NSN) 5340-01-184-3921, or NIIN 011843921, (retainer,helical compression spr) was assigned July 18, 1984 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 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 one supplier. Today, one supplier is listed as an Active supplier 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 5 years.
This NSN is somewhat common among different platforms, belonging to 5 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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 30, 2011, 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) 24327. [A CYLINDRICAL ITEM SPECIFICALLY DESIGNED TO FIT OVER THE END OF AND COMPLETELY ENCASE THE SPRING. THE OPEN END IS USUALLY FLANGED; THE OPPOSITE END MAY BE CLOSED OR HAVE AN ORIFICE TO ACCOMMODATE A GUIDE, PLUNGER, OR THE LIKE. IT IS USED TO POSITION THE SPRING AND RESTRAIN LATERAL MOTION. IT MAY PROVIDE A SEAT FOR THE SPRING. EXCLUDES:HOLDER,SPRING.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5340011843921 does not contain precious metals.
This information was last updated on Aug 01, 2025.