National Stock Number
5805-00-947-8989
National Stock Number (NSN) 5805-00-947-8989, or NIIN 009478989, (switch,telephone,crossbar) was assigned March 28, 1966 in the Federal Logistics Information System (FLIS). NIIN 009478989 was cancelled on June 26, 2002, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 2 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 2 suppliers. 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.
This NSN is assigned to Item Name Code (INC) 21278. [AN ELECTROMAGNETICALLY ACTUATED SWITCH IN WHICH CONTACTS ARE CLOSED BETWEEN HORIZONTAL AND VERTICAL BANKS OF CONDUCTING BARS. IT MAY BE DESIGNED TO FIND AND HOLD THE SPECIFIC CIRCUIT FROM WHICH THE STARTING SIGNAL HAS ORIGINATED, TO CHOOSE AN IDLE CIRCUIT AND CONNECT THE INCOMING SIGNAL TO IT, TO CONNECT THE TRUNK LINES FROM ANOTHER SWITCH TO THE DESIRED CALLED STATION AND/OR PERFORM OTHER SELECTIVE SWITCHING FUNCTIONS. SEE ALSO SWITCH, TELEPHONE, FINDER AND SWITCH TELEPHONE, SELECTOR.]. 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 5805009478989 does not contain precious metals.
This information was last updated on Aug 01, 2025.