Impeller, Pump, Centrifugal4320-01-178-9911

NSN 4320-01-178-9911 · NIIN 011789911

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

Government record, cited

Also searched as 4320-01-178-9911 · 4320011789911 · NIIN 011789911 · 01-178-9911 · FSC 4320 Power and Hand Pumps · 295059C2 · 500502-3-3/4-1/4 · 295059C2

Nearby stock numbers ← 4320-01-178-9778 Plunger, Pump · 4320-01-179-0979 →

Features

Impeller,pump,centrifugal — FSC 4320
Overall Diameter: 3.750 INCHES NOMINAL IN
Rotation Direction for Which Designed: COUNTERCLOCKWISE

Identification

NSN: 4320-01-178-9911
NIIN: 011789911
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors

General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-178-9911, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-178-9911
Item Name	Impeller,pump,centrifugal
FSC / FSG	4320 / 43 — Power and Hand Pumps
Status	ACTIVE
Overall Diameter	3.750 INCHES NOMINAL IN
Rotation Direction for Which Designed	COUNTERCLOCKWISE

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

Cross-Reference Index

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

Reference documents

Reference	Meaning
295059C2	3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand
500502-3-3/4-1/4	5/9 Secondary reference Waller Products Co Atlas Pumps Div
295059C2	C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions

No interchangeability data on file.

Other items in FSC 4320 — Power and Hand Pumps

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4320-00-001-1633

4320-00-001-1633 · Item name not on file

4320-00-001-2628

RETAINER AND PIN

4320-00-001-2629

HOUSING AND PIN

4320-00-001-2630

PUMP,CENTRIFUGAL

4320-00-001-2631

4320-00-001-2631 · Item name not on file

4320-00-001-2632

4320-00-001-2632 · Item name not on file

4320-00-001-3377

4320-00-001-3377 · Item name not on file

4320-00-001-3384

4320-00-001-3384 · Item name not on file

Frequently Asked Questions

What is NSN 4320-01-178-9911?

NSN 4320-01-178-9911 is a Impeller,pump,centrifugal, classified under FSC 4320, Power and Hand Pumps. Status: active.

What are the specifications of 4320-01-178-9911?

Key specifications for 4320-01-178-9911: Overall Diameter: 3.750 INCHES NOMINAL IN; Overall Width: 0.250 INCHES NOMINAL IN; End Item Identification: IMPELLER PUMP CENTRIFUGAL,WALLER PRODUCTS,MODEL 500C; Rotation Direction for Which Designed: COUNTERCLOCKWISE. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-178-9911 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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