National Stock Number
5330-00-439-8203
National Stock Number (NSN) 5330-00-439-8203, or NIIN 004398203, (gasket) was assigned January 1, 1963 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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
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 Feb 18, 2010, this NSN's acquisition method was noted as: Acquire, for the first time, directly from the actual manufacturer rather than the prime contractor who is not 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) 04522. [A DEFORMABLE MATERIAL WHICH PREVENTS THE PASSAGE OF MATTER THROUGH THE JOINT FORMED WHEN TWO FACES ARE JOINED. IT MAY BE METALLIC OR NONMETALLIC, LUBRICATED OR IMPREGNATED, SOLID OR HOLLOW CROSS SECTION. IT MAY BE MADE TO ANY PREDETERMINED DIMENSION AND SHAPE. EXCLUDES:FLAT DISKS, ITEMS MADE OF FELT MATERIAL AND ITEMS HAVING JOINTS. FOR ROUND METAL AND PLASTIC ITEMS WITH AN APERTURE AND A SOLID RECTANGULAR CROSS SECTION, SEE WASHER, FLAT; SHIM; BEARING, WASHER, THRUST; AND SPACER RING. EXCLUDES:DISK, VALVE; SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; SEAL, NONMETALLIC SPECIAL SHAPED SECTION; SHIELDING GASKET, ELECTRONIC; AND RING, SEALING JAR.]. 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 5330004398203 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.