National Stock Number
6645-00-291-6873
National Stock Number (NSN) 6645-00-291-6873, or NIIN 002916873, (chronometer,make-break circuit) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to 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) 18699. [AN INSTRUMENT WHICH MEASURES TIME TO THE ACCURACY OF A CHRONOMETER, AND WHICH INCLUDES PRECISION INTERNAL CONTACTS FOR OPENING AND/OR CLOSING AN EXTERNAL ELECTRIC CIRCUIT. THE INTERVALS AND FREQUENCY OF OPENING AND CLOSING ARE PRESET DURING MANUFACTURE BY THE PROGRAM WHEEL(S) DESIGN. IF MOUNTED, CASE MAY CONTAIN BATTERIES, SPARK SUPRESSOR CIRCUIT AND RELAY. SEE ALSO TIMER, SEQUENTIAL; TIMER, INTERVAL AND INTERVALOMETER (AS MODIFIED).]. 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 6645002916873 does not contain precious metals.
This NSN is associated to Schedule B 9107000000: time switches with clock or watch movement or with synchronous motor. The Schedule B End Use is listed as photo, service industry machinery. NAICS classification category 335314: relay and industrial control manufacturing.
This information was last updated on Aug 01, 2025.