NSN 4310-00-420-3349, 4310004203349
VALVE,UNLOADER

Federal Supply Classification: FSC 4310 - Compressors and Vacuum Pumps
National Item Identification Number: NIIN 004203349
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 4310-00-420-3349

National Stock Number (NSN) 4310-00-420-3349, or NIIN 004203349, (valve,unloader) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 3 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.

This NSN is assigned to Item Name Code (INC) 77777. 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 4310004203349 contains an unknown precious metal.

This information was last updated on Aug 01, 2025.