National Stock Number
5805-00-405-0421
National Stock Number (NSN) 5805-00-405-0421, or NIIN 004050421, (telephone central office section) was assigned March 29, 1971 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.
This part number has not been procured by the US Government in over 5 years.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 02, 2010, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 01490. [A STRUCTURAL UNIT, GENERALLY INCLOSED, WHICH CONTAINS A PORTION OF THE SWITCHING EQUIPMENT (STEPPING SWITCHES OR RELAYS) OF A DIAL TELEPHONE CENTRAL OFFICE. IT IS NOT A COMPLETE FUNCTIONING ITEM, BUT IS USED WITH ONE OR MORE SIMILAR SECTIONS TO MAKE UP A COMPLETE TELEPHONE CENTRAL OFFICE.]. 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 5805004050421 does not contain precious metals.
This NSN is associated to Schedule B 8517620050: machines for the reception, conversion & transmission or regeneration of voice, images or other data, including switching & routing apparatus, nesoi. The Schedule B End Use is listed as telecommunications equipment. NAICS classification category 334220: radio and television broadcasting and wireless communications equipment manufacturing.
This information was last updated on Aug 01, 2025.