Guard, Fan Impeller4140-01-074-9072

NSN 4140-01-074-9072 · NIIN 010749072

FSC 4140 — Fans, Air Circulators, and Blower Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment

Government record, cited

Also searched as 4140-01-074-9072 · 4140010749072 · NIIN 010749072 · 01-074-9072 · FSC 4140 Fans, Air Circulators, and Blower Equipment · 335-798-01 · 550481 · 300260-001 · 550481

Nearby stock numbers ← 4140-01-074-8948 Fan, Centrifugal · 4140-01-074-9508 Housing, Centrifugal Fan →

Features

Guard,fan Impeller — FSC 4140

Identification

NSN: 4140-01-074-9072
NIIN: 010749072
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment

General Description

The Guard,fan Impeller, cataloged under National Stock Number 4140-01-074-9072, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4140-01-074-9072
Item Name	Guard,fan Impeller
FSC / FSG	4140 / 41 — Fans, Air Circulators, and Blower Equipment
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

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4140-01-549-5537 POSSIBLE MATCH

GUARD,FAN IMPELLER

Possible match (shared part number)

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
335-798-01	3/9 Design control — primary reference U.S. Government activity
550481	5/9 Secondary reference U.S. Government activity
300260-001	5/9 Secondary reference Datametrics Corporation
550481	5/9 Secondary reference Comair Rotron Inc Sub of Kl Industries Inc

Related Parts

4140-01-549-5537POSSIBLE MATCH

GUARD,FAN IMPELLER

Frequently Asked Questions

What is NSN 4140-01-074-9072?

NSN 4140-01-074-9072 is a Guard,fan Impeller, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.

What NSN replaces 4140-01-074-9072?

1 possible match (shared part number, not a government interchangeability claim): 4140-01-549-5537. Verify interchangeability with system specifications before substitution.

What are the specifications of 4140-01-074-9072?

Key specifications for 4140-01-074-9072: Special Features: PLASTIC POLYCARBONATE,4.53 IN.SQUARE,0.26 IN.THK,FOUR 0.18 IN.DIA MTG HOLES ON 4.125 IN.BY 4.125 IN.MTG CENTERS; IN. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4140-01-074-9072 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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