National Stock Number
6645-01-439-7279
National Stock Number (NSN) 6645-01-439-7279, or NIIN 014397279, (case,make-break circuit chronome) was assigned December 18, 1996 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One of those 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, 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 Apr 25, 2009, this NSN's acquisition method was noted as: Suitable for competitive acquisition for the first time. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 18711. [A CASE WITH A LEATHER CARRYING STRAP, DESIGNED FOR MOUNTING AN UNMOUNTED CHRONOMETER, MAKE-BREAK CIRCUIT. IT IS PROVIDED WITH OUTSIDE TERMINALS FOR CONNECTING THE INSTRUMENT TO AN ELECTRICAL CIRCUIT. IT INCLUDES A HINGED OR REMOVABLE LID TO PROTECT THE WINDOW THROUGH WHICH THE DIAL IS READ. ONE TYPE, DESIGNED TO MOUNT THE INSTRUMENT IN GIMBALS, CONSISTS OF A HARDWOOD BOX WITH BOTTOM COMPARTMENT FOR HOUSING BATTERIES, RELAY AND SPARK SUPPRESSOR CIRCUIT. THE OTHER TYPE, DESIGNED TO MOUNT THE INSTRUMENT IN FOAM RUBBER PADS, IS OF FERROUS MAGNETIC METAL MOISTPROOF CONSTRUCTION, BUT WITHOUT SPACE FOR ACCESSORIES.]. 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 6645014397279 does not contain precious metals.
This information was last updated on Aug 01, 2025.