National Stock Number
5955-00-491-8658
National Stock Number (NSN) 5955-00-491-8658, or NIIN 004918658, (crystal unit,quartz) was assigned October 2, 1970 in the Federal Logistics Information System (FLIS). NIIN 004918658 was cancelled on December 2, 2003, with a cancelled status of "Item is Cancelled WITHOUT Replacement." 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 3 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.
This NSN is assigned to Item Name Code (INC) 00196. [AN ITEM WHICH CONSISTS OF A QUARTZ CRYSTAL RESONATOR(S), SUITABLY MOUNTED IN A HOLDER, QUARTZ CRYSTAL.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5955004918658 does not contain precious metals.
This information was last updated on Aug 01, 2025.