NSN 4320-00-398-5815, 4320003985815
DIFFUSER

Federal Supply Classification: FSC 4320 - Power and Hand Pumps
National Item Identification Number: NIIN 003985815
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

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

Let Us Know

CALL ABOUT NSN 4320-00-398-5815

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

+1-321-773-5710

REQUEST QUOTE for 4320-00-398-5815

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

Upload a List

DLMS^® Summary

National Stock Number 4320-00-398-5815

National Stock Number (NSN) 4320-00-398-5815, or NIIN 003985815, (diffuser) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 6 manufacturer part numbers associated with this NSN. 6 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. 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 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 4320003985815 contains an unknown precious metal.

This information was last updated on Aug 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) BRASS,4.875 IN.OD,2.125 IN.ID,0.438 IN.THK,COUNTERBORED ONE SIDE 2.500 IN.DIA BY 0.219 IN.DEEP,DIFFUSER GROOVE 0.500 IN.WIDE BY 0.219 IN.DEEP,DIFFUSER GROOVE 0.500 IN.WIDE BY 0.125 IN.DEEP,ONE RECTANGULAR HOLE 0.563 IN.LG BY 0.438 IN.WIDE,ONE SLOT ON OD PARALLEL WITH AXIS 0.125 IN.WIDE BY 0.156 IN.DEEP