Diameter: 18.650 INCHES MINIMUM AND 18.850 INCHES MAXIMUM IN
Blade Quantity: 16
Width: 3.050 INCHES MINIMUM AND 3.110 INCHES MAXIMUM IN
Identification
NSN: 4140-01-305-9099
NIIN: 013059099
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 4140-01-305-9099, 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 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4140-01-305-9099
Item Name
Impeller,fan,centrifugal
FSC / FSG
4140 / 41 — Fans, Air Circulators, and Blower Equipment
Status
ACTIVE
Style Designator
CURVED RADIAL W/ BACK PLATE
Diameter
18.650 INCHES MINIMUM AND 18.850 INCHES MAXIMUM IN
Blade Quantity
16
Width
3.050 INCHES MINIMUM AND 3.110 INCHES MAXIMUM IN
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
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
849244
3/9Design control — primary reference
U.S. Government activity
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 4140-01-305-9099?
NSN 4140-01-305-9099 is a Impeller,fan,centrifugal, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
What are the specifications of 4140-01-305-9099?
Key specifications for 4140-01-305-9099: Style Designator: CURVED RADIAL W/ BACK PLATE; Diameter: 18.650 INCHES MINIMUM AND 18.850 INCHES MAXIMUM IN; Blade Quantity: 16; Width: 3.050 INCHES MINIMUM AND 3.110 INCHES MAXIMUM IN. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4140-01-305-9099 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.