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NSN 4140-01-188-6977Government record, cited
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Impeller, Fan, Centrifugal4140-01-188-6977

NSN 4140-01-188-6977 · NIIN 011886977
FSC 4140 — Fans, Air Circulators, and Blower Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment
Government record, cited
Also searched as  4140-01-188-6977 · 4140011886977 · NIIN 011886977 · 01-188-6977 · FSC 4140 Fans, Air Circulators, and Blower Equipment · 260761 · 58634
Nearby stock numbers  ·
Features
  • Impeller,fan,centrifugal — FSC 4140
  • Diameter: 3.720 INCHES NOMINAL IN
  • Width: 2.910 INCHES NOMINAL IN
  • Material: STEEL OVERALL
Identification
  • NSN: 4140-01-188-6977
  • NIIN: 011886977
  • FSC: 4140 — Fans, Air Circulators, and Blower Equipment
  • FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
General Description

The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-01-188-6977, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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
ParameterValue
NSN4140-01-188-6977
Item NameImpeller,fan,centrifugal
FSC / FSG4140 / 41 — Fans, Air Circulators, and Blower Equipment
StatusACTIVE
Diameter3.720 INCHES NOMINAL IN
Width2.910 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 1
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4720-01-665-853958634 POSSIBLE MATCH
HOSE ASSEMBLY,NONMETALLIC
Possible match (shared part number)Stanley Black & Decker, Inc. Dba Stanley Hydraulic Tools Div Stanley Hydraulic Tools
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
260761 5/9 Secondary reference
Austin-Westran Llc
58634 3/2 Design control — primary reference
U.S. Government activity
Related Parts
4720-01-665-8539POSSIBLE MATCH
HOSE ASSEMBLY,NONMETALLIC
58634

Frequently Asked Questions

What is NSN 4140-01-188-6977?

NSN 4140-01-188-6977 is a Impeller,fan,centrifugal, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.

What NSN replaces 4140-01-188-6977?

1 possible match (shared part number, not a government interchangeability claim): 4720-01-665-8539. Verify interchangeability with system specifications before substitution.

What are the specifications of 4140-01-188-6977?

Key specifications for 4140-01-188-6977: Diameter: 3.720 INCHES NOMINAL IN; Width: 2.910 INCHES NOMINAL IN; Material: STEEL OVERALL. 3 specifications are documented in the U.S. Government catalog.

Is NSN 4140-01-188-6977 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.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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