Impeller, Pump, Centrifugal4320-01-421-8078

NSN 4320-01-421-8078 · NIIN 014218078

FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors

Government record, cited

Also searched as 4320-01-421-8078 · 4320014218078 · NIIN 014218078 · 01-421-8078 · FSC 4320 Power and Hand Pumps · PLAA6CCRE-16 ITEM 3 · CC10677-2 · 3-0137-11

Nearby stock numbers ← 4320-01-421-7692 Rod, Throttle, Water Pump · 4320-01-421-8083 Sleeve, Shaft, Pump →

Features

Impeller,pump,centrifugal — FSC 4320
Overall Diameter: 4.625 INCHES NOMINAL IN
Blade Quantity: 4
Material: COPPER ALLOY
Rotation Direction for Which Designed: CLOCKWISE

Identification

NSN: 4320-01-421-8078
NIIN: 014218078
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors

General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-421-8078, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-421-8078
Item Name	Impeller,pump,centrifugal
FSC / FSG	4320 / 43 — Power and Hand Pumps
Status	ACTIVE
Overall Diameter	4.625 INCHES NOMINAL IN
Blade Quantity	4
Material	COPPER ALLOY
Rotation Direction for Which Designed	CLOCKWISE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4320-01-422-19433-0137-10 POSSIBLE MATCH

IMPELLER,PUMP,CENTRIFUGAL

Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
PLAA6CCRE-16 ITEM 3	5/2 Secondary reference U.S. Government activity
CC10677-2	D/9 Drawing number reference only U.S. Government activity
3-0137-11	3/2 Design control — primary reference U.S. Government activity

Related Parts

4320-01-422-1943POSSIBLE MATCH

IMPELLER,PUMP,CENTRIFUGAL

3-0137-10

Frequently Asked Questions

What is NSN 4320-01-421-8078?

NSN 4320-01-421-8078 is a Impeller,pump,centrifugal, classified under FSC 4320, Power and Hand Pumps. Status: active.

What NSN replaces 4320-01-421-8078?

1 possible match (shared part number, not a government interchangeability claim): 4320-01-422-1943. Verify interchangeability with system specifications before substitution.

What are the specifications of 4320-01-421-8078?

Key specifications for 4320-01-421-8078: Overall Diameter: 4.625 INCHES NOMINAL IN; Overall Width: 4.375 INCHES NOMINAL IN; Blade Quantity: 4; Special Features: USED ON 4320-01-255-9590 CENTRIFUGAL PUMP; MATERIAL PER ASTM B148,ALLOY 955. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-421-8078 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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