National Stock Number
5999-12-121-5607
National Stock Number (NSN) 5999-12-121-5607, or NIIN 121215607, (cap,electrical) has an unknown assigned date. This NSN does not replace any other NSNs.
There are 26 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 16 suppliers. Today, 12 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are 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 unique to one weapons system.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 16186. [A CAP FOR USE WITH ELECTRONIC OR ELECTRICAL ITEMS. EXCLUDES:BOOT, DUST AND MOISTURE SEAL; CAP, IGNITION DISTRIBUTION; AND COVER, ELECTRICAL CONNECTOR.].
This information was last updated on Dec 24, 2025.