PartsTable TECHNICAL DATA SHEET

NSN 4140-01-276-4846Government record, cited

Impeller, Fan, Centrifugal4140-01-276-4846

NSN 4140-01-276-4846 · NIIN 012764846 · Part number 7W-33445-12/MCD-5474

Fm Af, Llc Dba American Fan Company · FSC 4140 — Fans, Air Circulators, and Blower Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment · CAGE 75477

Government record, cited

NSN 4140-01-276-4846 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-276-4846. Manufacturer of record part number: 7W-33445-12/MCD-5474.

Also searched as 4140-01-276-4846 · 4140012764846 · NIIN 012764846 · 01-276-4846 · FSC 4140 Fans, Air Circulators, and Blower Equipment · CAGE 75477 · 7W-33445-12/MCD-5474 · 7W-33445-12

Nearby stock numbers ← 4140-01-276-4845 Impeller, Fan, Centrifugal · 4140-01-276-4847 Impeller, Fan, Centrifugal →

Features

Impeller,fan,centrifugal — FSC 4140
1 manufacturer part number on file
Manufacturer of record: Fm Af, Llc Dba American Fan Company

Identification

NSN: 4140-01-276-4846
NIIN: 012764846
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
Primary part number: 7W-33445-12/MCD-5474
Manufacturer: Fm Af, Llc Dba American Fan Company

General Description

The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-01-276-4846, 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 Fm Af, Llc Dba American Fan Company. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Impeller,fan,centrifugal
FSC / FSG	4140 — Fans, Air Circulators, and Blower Equipment (FSG 41)
Manufacturers	Fm Af, Llc Dba American Fan Company (CAGE 75477)

Technical Specifications

Parameter	Value
NSN	4140-01-276-4846
Primary Part Number	7W-33445-12/MCD-5474
Item Name	Impeller,fan,centrifugal
FSC / FSG	4140 / 41 — Fans, Air Circulators, and Blower Equipment
Manufacturer	Fm Af, Llc Dba American Fan Company
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
7W-33445-12/MCD-5474 PRIMARY	Fm Af, Llc Dba American Fan Company (USA)

Reference documents

Reference	Meaning
7W-33445-12	5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans
7W-33445-12/MCD-5474	5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans

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 4140-01-276-4846?

NSN 4140-01-276-4846 is a Impeller,fan,centrifugal, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.

What part numbers are listed for NSN 4140-01-276-4846?

NSN 4140-01-276-4846 has 1 manufacturer part number on file: 7W-33445-12/MCD-5474 (Fm Af, Llc Dba American Fan Company).

Is NSN 4140-01-276-4846 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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