PartsTable TECHNICAL DATA SHEET

NSN 4320-01-409-2657Government record, cited

Pump, Rotary4320-01-409-2657

NSN 4320-01-409-2657 · NIIN 014092657 · Part number A422BS462

Siemens Energy, Inc. · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 16712

Government record, cited

NSN 4320-01-409-2657 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-409-2657. Manufacturer of record part number: A422BS462.

Also searched as 4320-01-409-2657 · 4320014092657 · NIIN 014092657 · 01-409-2657 · FSC 4320 Power and Hand Pumps · CAGE 16712 · A422BS462 · SF10124GR1

Nearby stock numbers ← 4320-01-409-2656 Pump, Rotary · 4320-01-409-2658 Pump, Rotary →

Features

Pump,rotary — FSC 4320
2 manufacturer part numbers on file
Manufacturer of record: Siemens Energy, Inc.

Identification

NSN: 4320-01-409-2657
NIIN: 014092657
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: A422BS462
Manufacturer: Siemens Energy, Inc.

General Description

The Pump,rotary, cataloged under National Stock Number 4320-01-409-2657, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Siemens Energy, Inc.. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Technical Specifications

Parameter	Value
NSN	4320-01-409-2657
Primary Part Number	A422BS462
Item Name	Pump,rotary
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Siemens Energy, 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
A422BS462	Circor Pumps North America Llc (USA)
A422BS462 PRIMARY	Siemens Energy, Inc. (USA)

Reference documents

Reference	Meaning
SF10124GR1	5/1 Secondary reference Circor Pumps North America Llc

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 4320-01-409-2657?

NSN 4320-01-409-2657 is a Pump,rotary, manufactured by Siemens Energy, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-409-2657?

NSN 4320-01-409-2657 has 2 manufacturer part numbers on file: A422BS462 (Circor Pumps North America Llc), A422BS462 (Siemens Energy, Inc.).

What are the specifications of A422BS462?

Key specifications for A422BS462: End Item Identification: CARPER PROGRAM. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-409-2657 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.

PartsTable Design LLC · partstable.com