National Stock Number
5330-01-027-2921
National Stock Number (NSN) 5330-01-027-2921, or NIIN 010272921, (retainer,packing) was assigned September 16, 1976 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 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 4 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 25, 2008, 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 annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 13706. [AN ITEM DESIGNED TO FIT OVER A PACKING GLAND BY MATING WITH A SURFACE OF A SECOND PART WHICH TOGETHER WILL RETAIN INTO A NARROW GROOVE OR CONFINED SPACE THE PACKING, PREFORMED OR O-RING, OR AN ITEM DESIGNED TO FIT OVER A ROD OR SHAFT, TO MATE WITH A STUFFING BOX TO CONFINE PACKING MATERIAL. IT MAY FUNCTION AS A STATIC OR DYNAMIC SEAL RETAINER WITH THE PACKING LOCATED ON, AROUND, OR IN THE CENTERLINE DIRECTION OF THE ROD OR SHAFT AXIS. IT MAY HAVE HOLES OR JOINTS FOR MOUNTING, BE THREADED OR UNTHREADED. SEE ALSO PACKING NUT AND PACKING NUT, STUFFING TUBE.]. 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 5330010272921 contains an unknown precious metal.
This NSN is associated to Schedule B 3926904500: gaskets,washers & other seals. The Schedule B End Use is listed as other industrial supplies. NAICS classification category 339991: gasket, packing, and sealing device manufacturing.
This information was last updated on Aug 01, 2025.