National Stock Number
5340-00-178-1403
National Stock Number (NSN) 5340-00-178-1403, or NIIN 001781403, (locking plate,nut and bolt) was assigned January 24, 1969 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. 2 of those 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, there are no suppliers that are 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 Jun 04, 2015. 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: SPE5EK15V4574, SPE5EK15V4574. The total value of the awarded contracts has been US$ 653.73.
This NSN is somewhat common among different platforms, belonging to 3 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 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 22247. [A RELATIVELY THIN METAL ITEM OF VARIOUS SHAPES, HAVING TWO OR MORE BOLT HOLES AND LOCKING EARS OR TABS. THE ITEM IS DESIGNED TO BE INSERTED ON THE BOLTS AND THE EARS OR TABS BENT AGAINST THE WRENCHING FLAT(S) OF THE BOLT HEAD OR NUT TO RESTRICT LOOSENING OF THE BOLT OR NUT. THE LOCKING EARS OR TABS MAY BE PREBENT. SEE ALSO RETAINER, NUT AND BOLT.]. 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 5340001781403 contains an unknown precious metal.
This NSN is associated to Schedule B 7318210000: spring washers and other lock washers, iron or steel. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.
This information was last updated on May 01, 2025.