NSN 4820-99-957-6980, 4820999576980
VALVE BYPASS ASSEMBLY

Federal Supply Classification: FSC 4820 - Valves, Nonpowered
National Item Identification Number: NIIN 999576980
Codification Country: United Kingdom
Item Name Code: INC 77777
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 4820-99-957-6980

National Stock Number (NSN) 4820-99-957-6980, or NIIN 999576980, (valve bypass assembly) has an unknown assigned date. 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, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are 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 information was last updated on Nov 07, 2025.