PartsTable TECHNICAL DATA SHEET

NSN 4320-01-494-4203Government record, cited

Impeller, Pump, Centrifugal4320-01-494-4203

NSN 4320-01-494-4203 · NIIN 014944203

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

Government record, cited

Also searched as 4320-01-494-4203 · 4320014944203 · NIIN 014944203 · 01-494-4203 · FSC 4320 Power and Hand Pumps · 801575 12.25IN · 1801490 ITEM NO.2 12.25IN · 1801490

Nearby stock numbers ← 4320-01-494-3548 Deflector, Dirt and Liquid · 4320-01-494-4211 Deflector, Dirt and Liquid →

Features

Impeller,pump,centrifugal — FSC 4320

Identification

NSN: 4320-01-494-4203
NIIN: 014944203
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors

General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-494-4203, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 Name	Impeller,pump,centrifugal
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)

Technical Specifications

Parameter	Value
NSN	4320-01-494-4203
Item Name	Impeller,pump,centrifugal
FSC / FSG	4320 / 43 — Power and Hand Pumps
Status	ACTIVE

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 7

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

4320-01-494-4211634930 POSSIBLE MATCH

DEFLECTOR,DIRT AND LIQUID

Possible match (shared part number)Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer

3040-01-494-4239801409 POSSIBLE MATCH

SHAFT,SHOULDERED

Possible match (shared part number)Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer

4730-01-494-4243 POSSIBLE MATCH

PLUG,PIPE,MAGNETIC

Possible match (shared part number)

4320-01-494-4249 POSSIBLE MATCH

HOUSING SECTION,LIQUID PUMP

Possible match (shared part number)

4320-01-494-4252643386 POSSIBLE MATCH

SEAL ASSEMBLY,SHAFT,SPRING LOADE

Possible match (shared part number)A W Chesterton Co Div Sealing Device Division

3130-01-495-0906801406 POSSIBLE MATCH

HOUSING,BEARING UNIT

Possible match (shared part number)Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer

3110-01-495-0922 POSSIBLE MATCH

COLLAR,BEARING

Possible match (shared part number)

Cross-Reference Index

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

Reference documents

Reference	Meaning
801575 12.25IN	3/9 Design control — primary reference Blackmer System One, Inc. Div Blackmer System One, Inc.
1801490 ITEM NO.2 12.25IN	5/9 Secondary reference Blackmer System One, Inc. Div Blackmer System One, Inc.
1801490	D/9 Drawing number reference only Blackmer System One, Inc. Div Blackmer System One, Inc.

Related Parts

4320-01-494-4211POSSIBLE MATCH

DEFLECTOR,DIRT AND LIQUID

634930

3040-01-494-4239POSSIBLE MATCH

SHAFT,SHOULDERED

801409

4730-01-494-4243POSSIBLE MATCH

PLUG,PIPE,MAGNETIC

4320-01-494-4249POSSIBLE MATCH

HOUSING SECTION,LIQUID PUMP

4320-01-494-4252POSSIBLE MATCH

SEAL ASSEMBLY,SHAFT,SPRING LOADE

643386

3130-01-495-0906POSSIBLE MATCH

HOUSING,BEARING UNIT

801406

3110-01-495-0922POSSIBLE MATCH

COLLAR,BEARING

Frequently Asked Questions

What is NSN 4320-01-494-4203?

NSN 4320-01-494-4203 is a Impeller,pump,centrifugal, classified under FSC 4320, Power and Hand Pumps. Status: active.

What NSN replaces 4320-01-494-4203?

7 possible matches (shared part number, not a government interchangeability claim): 4320-01-494-4211, 3040-01-494-4239, 4730-01-494-4243. Verify interchangeability with system specifications before substitution.

Is NSN 4320-01-494-4203 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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