National Stock Number
6680-01-284-6521
National Stock Number (NSN) 6680-01-284-6521, or NIIN 012846521, (tachometer,electric,nonself-gene) was assigned August 28, 1988 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 4 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers 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, with the most recent procurement date of Jul 01, 2019. There have been 14 contracts issued for this part number, with 13 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 6 different suppliers. The last contract numbers awarded were: SPE4A619V259B, SPE4A619V259B, SPE4A619V216F, SPE4A619V216F, SPE4A619V120N. The total value of the awarded contracts has been US$ 89,151.87.
This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 19, 2008, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 18722. [A TACHOMETER WHICH FUNCTIONS BY MEASURING THE RATE (DWELL) OF THE OPENING AND CLOSING OF THE CONTACT POINTS. SUITABLE FOR USE WITH MAGNETO OR BATTERY IGNITION SYSTEMS. POWERED BY SELF-CONTAINED BATTERIES. EXCLUDES:TACHOMETER, ELECTRONIC; TACHOMETER, STROBOSCOPIC AND TACHOMETER, VIBRATING REED.]. 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 6680012846521 does not contain precious metals.
This information was last updated on Aug 01, 2025.