Rotor, Torquer4320-01-264-0840

NSN 4320-01-264-0840 · NIIN 012640840 · Part number 557-1721-01

Acron Aviation, Inc. · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 25583

Government record, cited

NSN 4320-01-264-0840 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-264-0840. Manufacturer of record part number: 557-1721-01.

Also searched as 4320-01-264-0840 · 4320012640840 · NIIN 012640840 · 01-264-0840 · FSC 4320 Power and Hand Pumps · CAGE 25583 · 557-1721-01

Nearby stock numbers ← 4320-01-264-0688 Pump, Rotary · 4320-01-264-1017 Cover, Thrust, Pump →

Features

Rotor,torquer — FSC 4320
1 manufacturer part number on file
Manufacturer of record: Acron Aviation, Inc.

Identification

NSN: 4320-01-264-0840
NIIN: 012640840
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 557-1721-01
Manufacturer: Acron Aviation, Inc.

General Description

The Rotor,torquer, cataloged under National Stock Number 4320-01-264-0840, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Acron Aviation, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Rotor,torquer
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)
Manufacturers	Acron Aviation, Inc. (CAGE 25583)

Technical Specifications

Parameter	Value
NSN	4320-01-264-0840
Primary Part Number	557-1721-01
Item Name	Rotor,torquer
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Acron Aviation, 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
557-1721-01 PRIMARY	Acron Aviation, Inc. (USA)

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 4320-01-264-0840?

NSN 4320-01-264-0840 is a Rotor,torquer, manufactured by Acron Aviation, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-264-0840?

NSN 4320-01-264-0840 has 1 manufacturer part number on file: 557-1721-01 (Acron Aviation, Inc.).

Is NSN 4320-01-264-0840 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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