National Stock Number
4310-00-821-8521
National Stock Number (NSN) 4310-00-821-8521, or NIIN 008218521, (vacuum pump unit,reciprocating) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). NIIN 008218521 was cancelled on June 2, 2004, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4920014697162. This NSN does not replace any other NSNs.
There are 4 manufacturer part numbers associated with this NSN. 4 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. ISO Group has several sources of supply for 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) 29902. [AN ASSEMBLED UNIT CONSISTING OF A COMMONLY MOUNTED RECIPROCATING VACUUM PUMP(S), PRIME MOVER(S), AND THE NECESSARY COMPONENTS TO PROVIDE FOR A COMPLETE OPERATION. IT MAY INCLUDE A VACUUM STORAGE TANK(S).]. 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 4310008218521 does not contain precious metals.
This information was last updated on May 01, 2025.