Fan Assembly, Tubeaxial4140-01-668-1704

NSN 4140-01-668-1704 · NIIN 016681704 · Part number 3635025-01

Instruments Incorporated Dba Instruments Inc · FSC 4140 — Fans, Air Circulators, and Blower Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment · CAGE 34563

Government record, cited

NSN 4140-01-668-1704 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-668-1704. Manufacturer of record part number: 3635025-01.

Also searched as 4140-01-668-1704 · 4140016681704 · NIIN 016681704 · 01-668-1704 · FSC 4140 Fans, Air Circulators, and Blower Equipment · CAGE 34563 · 3635025-01

Nearby stock numbers ← 4140-01-668-1368 Fan, Vaneaxial · 4140-01-668-1707 Fan Assembly, Tubeaxial →

Features

Fan Assembly,tubeaxial — FSC 4140
1 manufacturer part number on file
Manufacturer of record: Instruments Incorporated Dba Instruments Inc

Identification

NSN: 4140-01-668-1704
NIIN: 016681704
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
Primary part number: 3635025-01
Manufacturer: Instruments Incorporated Dba Instruments Inc

General Description

The Fan Assembly,tubeaxial, cataloged under National Stock Number 4140-01-668-1704, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Instruments Incorporated Dba Instruments 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	Fan Assembly,tubeaxial
FSC / FSG	4140 — Fans, Air Circulators, and Blower Equipment (FSG 41)
Manufacturers	Instruments Incorporated Dba Instruments Inc (CAGE 34563)

Technical Specifications

Parameter	Value
NSN	4140-01-668-1704
Primary Part Number	3635025-01
Item Name	Fan Assembly,tubeaxial
FSC / FSG	4140 / 41 — Fans, Air Circulators, and Blower Equipment
Manufacturer	Instruments Incorporated Dba Instruments 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
3635025-01 PRIMARY	Instruments Incorporated Dba Instruments Inc (USA)

No interchangeability data on file.

Other items in FSC 4140 — Fans, Air Circulators, and Blower Equipment

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

4140-00-000-0082

IMPELLER,FAN,AXIAL

4140-00-001-1517

FAN,CENTRIFUGAL

4140-00-001-1536

FAN,VENTILATING

4140-00-001-1537

4140-00-001-1537 · Item name not on file

4140-00-001-3930

4140-00-001-3930 · Item name not on file

4140-00-001-6464

4140-00-001-6464 · Item name not on file

4140-00-001-6874

4140-00-001-6874 · Item name not on file

4140-00-001-6875

4140-00-001-6875 · Item name not on file

Frequently Asked Questions

What is NSN 4140-01-668-1704?

NSN 4140-01-668-1704 is a Fan Assembly,tubeaxial, manufactured by Instruments Incorporated Dba Instruments Inc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.

What part numbers are listed for NSN 4140-01-668-1704?

NSN 4140-01-668-1704 has 1 manufacturer part number on file: 3635025-01 (Instruments Incorporated Dba Instruments Inc).

Is NSN 4140-01-668-1704 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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