NSN 4820-12-176-9997, 4820121769997
VALVE,RESTRICTOR CHECK

Federal Supply Classification: FSC 4820 - Valves, Nonpowered
National Item Identification Number: NIIN 121769997
Codification Country: Germany
Item Name Code: INC 20520
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

Manufacture or supply this part?
Join our growing community of certified suppliers.

Let Us Know

CALL ABOUT NSN 4820-12-176-9997

Our client representatives are standing by to help fulfill your request.

+1-321-773-5710

REQUEST QUOTE for 4820-12-176-9997

Have a list that needs to be quoted? Upload it here.

Upload a List

DLMS^® Summary

National Stock Number 4820-12-176-9997

National Stock Number (NSN) 4820-12-176-9997, or NIIN 121769997, (valve,restrictor check) has an unknown assigned date. This NSN does not replace any other NSNs.

There are 5 manufacturer part numbers associated with this NSN. None of the associated 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, 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 unique to one weapons system.

This NSN is assigned to Item Name Code (INC) 20520. [A VALVE HAVING AN ORIFICE IN THE POPPET, DISK, OR THE LIKE, TO PERMIT RESTRICTED FLUID FLOW WHEN THE VALVE IS SEATED. IT DOES NOT HAVE A STEM OR PROVISIONS FOR PRESSURE ADJUSTMENTS, AND IS SIMILAR TO A VALVE, CHECK WITH THE EXCEPTION OF THE ORIFICE WHICH PERMITS FLUID FLOW IN MORE THAN ONE DIRECTION.].

This information was last updated on Jun 13, 2025.