NSN 4820-00-634-8948, 4820006348948
Cancelled -> Replaced by 1650006963755

Federal Supply Classification: FSC 4820 - Valves, Nonpowered
National Item Identification Number: NIIN 006348948
Codification Country: United States
Item Name Code: INC 27489
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: In Stock Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 4820-00-634-8948

National Stock Number (NSN) 4820-00-634-8948, or NIIN 006348948, (valve,vacuum regulating) 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: 1650005294674, 1650001241569, 1650006963755.

There are 3 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is 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 unique to one weapons system.

This NSN is assigned to Item Name Code (INC) 27489. [A DEVICE DESIGNED TO REGULATE VACUUM WITHIN THE DESIRED OPERATING LIMITS. SEE ALSO VALVE, VACUUM BREAKING.]. 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 4820006348948 does not contain precious metals.

This NSN is associated to Schedule B 8481809050: other taps, cocks, valves, etc., nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.

This information was last updated on Jul 01, 2025.

Technical Characteristics

THIRD END THREAD DIRECTION: (ACNZ) RIGHT-HAND
END CONNECTION QUANTITY: (ADQZ) 4
THIRD END CONNECTION TYPE: (ACMY) THREADED INTERNAL PIPE
FOURTH END NOMINAL PIPE SIZE ACCOMMODATED: (ACQB) 0.375 INCHES
SECOND END THREAD DIRECTION: (ACMS) RIGHT-HAND
THIRD END RELATIONSHIP WITH PRECEDING ENDS: (ACMX) NOT IDENTICAL WITH FIRST OR SECOND END
THIRD END NOMINAL PIPE SIZE ACCOMMODATED: (ACNV) 0.250 INCHES
MEDIA FOR WHICH DESIGNED: (ACKL) AIR
BODY MATERIAL: (AAFZ) ANY ACCEPTABLE
FIRST END CONNECTION TYPE: (ACKM) THREADED INTERNAL PIPE
FOURTH END THREAD DIRECTION: (ACQF) RIGHT-HAND
FIRST END THREAD DIRECTION: (ACLL) RIGHT-HAND
FLOW CONTROL DEVICE: (ADQU) DIAPHRAGM
SECOND END CONNECTION TYPE: (ACLS) THREADED INTERNAL PIPE
SECOND END NOMINAL PIPE SIZE ACCOMMODATED: (ACMN) 0.125 INCHES
FOURTH END RELATIONSHIP WITH PRECEDING ENDS: (ACPE) NOT IDENTICAL WITH FIRST, SECOND OR THIRD END
SECOND END RELATIONSHIP WITH FIRST END: (ACLR) NOT IDENTICAL
FOURTH END CONNECTION TYPE: (ACPF) THREADED INTERNAL PIPE
FIRST END NOMINAL PIPE SIZE ACCOMMODATED: (ACLG) 0.750 INCHES