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NSN 4320-00-028-3877Government record, cited

Ring, Casing4320-00-028-3877

NSN 4320-00-028-3877 · NIIN 000283877 · Part number C4A
Circor Naval Solutions Llc Dba Warren Pumps · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 63857
Government record, cited
NSN 4320-00-028-3877 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-028-3877. Manufacturer of record part number: C4A.
Also searched as  4320-00-028-3877 · 4320000283877 · NIIN 000283877 · 00-028-3877 · FSC 4320 Power and Hand Pumps · CAGE 63857 · C4A
Nearby stock numbers  ·
Features
  • Ring,casing — FSC 4320
  • 1 manufacturer part number on file
  • Manufacturer of record: Circor Naval Solutions Llc Dba Warren Pumps
Identification
  • NSN: 4320-00-028-3877
  • NIIN: 000283877
  • FSC: 4320 — Power and Hand Pumps
  • FSG: 43 — Pumps and Compressors
  • Primary part number: C4A
  • Manufacturer: Circor Naval Solutions Llc Dba Warren Pumps
General Description

The Ring,casing, cataloged under National Stock Number 4320-00-028-3877, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts
Item NameRing,casing
FSC / FSG4320 — Power and Hand Pumps (FSG 43)
ManufacturersCircor Naval Solutions Llc Dba Warren Pumps (CAGE 63857)
Technical Specifications
ParameterValue
NSN4320-00-028-3877
Primary Part NumberC4A
Item NameRing,casing
FSC / FSG4320 / 43 — Power and Hand Pumps
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
⇄ Related Items 5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
6220-00-299-7166 POSSIBLE MATCH
LIGHT,COCKPIT,AIRCRAFT
Possible match (shared part number)
2940-00-334-4021 POSSIBLE MATCH
AIR CLEANER,INTAKE
Possible match (shared part number)
5950-00-482-9243C4A POSSIBLE MATCH
COIL,ELECTRICAL
Possible match (shared part number)Atb Laurence Scott Ltd
5805-00-505-2728 POSSIBLE MATCH
RINGER,TELEPHONE
Possible match (shared part number)
4310-01-039-5955 POSSIBLE MATCH
PISTON,COMPRESSOR
Possible match (shared part number)
Cross-Reference Index
Part NumberManufacturer
C4A PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
6220-00-299-7166POSSIBLE MATCH
LIGHT,COCKPIT,AIRCRAFT
2940-00-334-4021POSSIBLE MATCH
AIR CLEANER,INTAKE
5950-00-482-9243POSSIBLE MATCH
COIL,ELECTRICAL
C4A
5805-00-505-2728POSSIBLE MATCH
RINGER,TELEPHONE
4310-01-039-5955POSSIBLE MATCH
PISTON,COMPRESSOR

Frequently Asked Questions

What is NSN 4320-00-028-3877?

NSN 4320-00-028-3877 is a Ring,casing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-00-028-3877?

NSN 4320-00-028-3877 has 1 manufacturer part number on file: C4A (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 4320-00-028-3877?

5 possible matches (shared part number, not a government interchangeability claim): 6220-00-299-7166, 2940-00-334-4021, 5950-00-482-9243. Verify interchangeability with system specifications before substitution.

Is NSN 4320-00-028-3877 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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