National Stock Number
5970-00-153-7961
National Stock Number (NSN) 5970-00-153-7961, or NIIN 001537961, (insulator,washer) was assigned October 10, 1971 in the Federal Logistics Information System (FLIS). NIIN 001537961 was cancelled on July 2, 2011, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5310011290176. 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, with the most recent procurement date of Oct 14, 2009. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM4A610D5006. The total value of the awarded contracts has been US$ 200.43.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 18294. [AN INSULATOR THAT IS ESSENTIALLY THIN AND FLAT, WITH ONE THROUGH HOLE CENTRALLY LOCATED. THE GENERAL SHAPE MAY VARY BY THE ADDITION OF FEATURES SUCH AS BEVELED EDGES, INDENTED SURFACES, THROUGH HOLE KEYS, AND/OR PERIPHERAL FLATS. THE THICKNESS MEASURED BETWEEN THE TWO PARALLEL BEARING SURFACES MUST NOT EXCEED 25 PERCENT OF THE OUTSIDE DIAMETER OR THE SHORTEST DISTANCE BETWEEN PERIPHERAL FLATS. THE THICKNESS MEASURED BETWEEN THE TWO PARALLEL BEARING SURFACES MUST NOT EXCEED 25 PERCENT OF THE OUTSIDE DIAMETER OR THE SHORTEST DISTANCE BETWEEN PERIPHERAL FLATS. EXCLUDES:ITEMS WITH MORE THAN ONE HOLE. SEE ALSO INSULATOR, DISK; INSULATOR, BEAD; INSULATOR, BUSHING; AND INSULATOR, PLATE]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5970001537961 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.