National Stock Number
4310-00-540-1271
National Stock Number (NSN) 4310-00-540-1271, or NIIN 005401271, (vacuum pump unit,rotary) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 4310010049026, 4310001374103, 4310001399051.
There are no manufacturer part numbers associated to this NSN. 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 10, 1998, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (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) 29904. [AN ASSEMBLED UNIT CONSISTING OF A COMMONLY MOUNTED ROTARY VACUUM PUMP(S), PRIME MOVER(S), AND THE NECESSARY COMPONENTS TO PROVIDE FOR A COMPLETE OPERATION. IT MAY INCLUDE VACUUM STORAGE TANK(S).]. 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 4310005401271 does not contain precious metals.
This NSN is associated to Schedule B 8414100000: vacuum pumps. The Schedule B End Use is listed as industrial engines. NAICS classification category 333912: air and gas compressor manufacturing.
This information was last updated on Aug 01, 2025.