PartsTable TECHNICAL DATA SHEET

NSN 4320-01-026-3201Government record, cited

Pump Unit, Centrifugal4320-01-026-3201

NSN 4320-01-026-3201 · NIIN 010263201 · Part number S-25 1/12HP 1 1/2IN. FLANGE

Armstrong Pumps Inc · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 52694

Government record, cited

NSN 4320-01-026-3201 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-026-3201. Manufacturer of record part number: S-25 1/12HP 1 1/2IN. FLANGE.

Also searched as 4320-01-026-3201 · 4320010263201 · NIIN 010263201 · 01-026-3201 · FSC 4320 Power and Hand Pumps · CAGE 52694 · S-25 1/12HP 1 1/2IN. FLANGE · 150SERIES100-1-1/2INFLANGED

Nearby stock numbers ← 4320-01-026-3143 Pump, Reciprocating · 4320-01-026-3214 Sleeve, Shaft, Pump →

Features

Pump Unit,centrifugal — FSC 4320
1 manufacturer part number on file
Manufacturer of record: Armstrong Pumps Inc

Identification

NSN: 4320-01-026-3201
NIIN: 010263201
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: S-25 1/12HP 1 1/2IN. FLANGE
Manufacturer: Armstrong Pumps Inc

General Description

The Pump Unit,centrifugal, cataloged under National Stock Number 4320-01-026-3201, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Armstrong Pumps Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Pump Unit,centrifugal
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)
Manufacturers	Armstrong Pumps Inc (CAGE 52694)

Technical Specifications

Parameter	Value
NSN	4320-01-026-3201
Primary Part Number	S-25 1/12HP 1 1/2IN. FLANGE
Item Name	Pump Unit,centrifugal
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Armstrong Pumps Inc
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

Cross-Reference Index

Part Number	Manufacturer
S-25 1/12HP 1 1/2IN. FLANGE	Armstrong Pumps Inc (USA)

Reference documents

Reference	Meaning
150SERIES100-1-1/2INFLANGED	3/9 Design control — primary reference Itt Bell and Gosset-Hydronics a Unit of Itt Fluid Handling Div

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 4320-01-026-3201?

NSN 4320-01-026-3201 is a Pump Unit,centrifugal, manufactured by Armstrong Pumps Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-026-3201?

NSN 4320-01-026-3201 has 1 manufacturer part number on file: S-25 1/12HP 1 1/2IN. FLANGE (Armstrong Pumps Inc).

Is NSN 4320-01-026-3201 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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