National Stock Number
3040-00-453-9990
National Stock Number (NSN) 3040-00-453-9990, or NIIN 004539990, (nut,coupling,flexible casing) was assigned April 21, 1969 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. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 20314. [AN ITEM OF METALLIC COMPOSITION WITH INTERNAL THREADS AND AN INTERNAL SEAT OR SHOULDER DESIGNED FOR THE PURPOSE OF JOINING A FLEXIBLE CASING, SUCH AS A CASING, FLEXIBLE SHAFT ASSEMBLY CAPPED WITH A FERRULE AND FITTING. SEE ALSO NUT, COUPLING, ELECTRICAL CONDUIT.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 3040004539990 does not contain precious metals.
This NSN is associated to Schedule B 8483608000: shaft couplings, except universal joints. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333613: mechanical power transmission equipment manufacturing.
This information was last updated on Jul 01, 2025.