National Stock Number (NSN) 5340-01-178-4503, or NIIN 011784503, (boot,dust and moisture seal) was assigned May 5, 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. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 2 suppliers are listed as Active suppliers 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, with the most recent procurement date of Jul 30, 2018. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE4A618PM181. The total value of the awarded contracts has been US$ 1,776.30.
This NSN is very common among different weapons systems, belonging to 26 different platforms.
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 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 19302. [A FLEXIBLE, NONMETALLIC ITEM DESIGNED TO PREVENT ENTRY OF DUST, MOISTURE AND OTHER CONTAMINANTS INTO CRITICAL AREAS AROUND SHAFTS, LEVERS, ELECTRICAL WIRES AND HOSES. SEALING MAY BE EITHER STATIC OR DYNAMIC. THE ITEM MAY INCLUDE MOUNTING HARDWARE (SUPPORT PLATES, CLAMPS AND THE LIKE). EXCLUDES:BELLOWS, PROTECTION; GROMMET, NONMETALLIC; AND CABLE NIPPLE, ELECTRICAL. SEE ALSO CAP, ELECTRICAL; CAP, PROTECTIVE, DUST AND MOISTURE SEAL; AND SHIELD, ELECTRICAL CONNECTOR.]. 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 5340011784503 does not contain precious metals.
This information was last updated on Jul 01, 2025.