PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0-621-4CWHOB1/4BOREALUM/STLImpeller,fan,axial

Regal-Beloit Corporation Dba Fasco Group Div Cassville Division · NSN 4140-00-314-1025 · FSC 4140 · No Item Name Available
Verified by PartsTable
NSN 4140-00-314-1025 — this item is cataloged by the U.S. Government under National Stock Number 4140-00-314-1025. Primary manufacturer part number: 0-621-4CWHOB1/4BOREALUM/STL.
Features
  • Impeller,fan,axial — FSC 4140
  • Diameter: 6.000 INCHES NOMINAL IN
  • Hub Location: BACK
  • Blade Quantity: 4
  • Rotation Direction for Which Designed: CLOCKWISE
  • Attachment Method: SETSCREW
  • Style Designator: ROUNDED TIP
  • Material: ALUMINUM OVERALL
Applications
  • Applications requiring Aluminum Overall construction
General Description

The Impeller,fan,axial, cataloged under National Stock Number 4140-00-314-1025, is classified within Federal Supply Class 4140 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Regal-Beloit Corporation Dba Fasco Group Div Cassville Division. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4140-00-314-1025
Primary Part Number0-621-4CWHOB1/4BOREALUM/STL
Item NameImpeller,fan,axial
FSC / FSG4140 / 41 — No Item Name Available
ManufacturerRegal-Beloit Corporation Dba Fasco Group Div Cassville Division
StatusCANCELLED
Diameter6.000 INCHES NOMINAL IN
Hub LocationBACK
Blade Quantity4
Rotation Direction for Which DesignedCLOCKWISE
Attachment MethodSETSCREW
Style DesignatorROUNDED TIP
MaterialALUMINUM OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
4140-00-054-5835429017 INTERCHANGEABLE
Impeller,fan,axial
Rotron Incorporated
4140-00-322-7016 INTERCHANGEABLE
Impeller,fan,axial
2040-00-480-9118 INTERCHANGEABLE
Rudder,boat
Cross-Reference Index
Part NumberManufacturer
0-621-4 Regal-Beloit Corporation Dba Fasco Group Div Cassville Division (USA)
0-621-4CWHOB1/4BOREALUM/STL PRIMARY Regal-Beloit Corporation Dba Fasco Group Div Cassville Division (USA)
1165755 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
728056 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
4140-00-054-5835INTERCHANGEABLE
IMPELLER,FAN,AXIAL
429017
4140-00-322-7016INTERCHANGEABLE
IMPELLER,FAN,AXIAL
2040-00-480-9118INTERCHANGEABLE
RUDDER,BOAT

Frequently Asked Questions

What is NSN 4140-00-314-1025?

NSN 4140-00-314-1025 is a Impeller,fan,axial, manufactured by Regal-Beloit Corporation Dba Fasco Group Div Cassville Division, classified under FSC 4140 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4140-00-314-1025?

NSN 4140-00-314-1025 has 4 cross-referenced part numbers: 0-621-4 (Regal-Beloit Corporation Dba Fasco Group Div Cassville Division), 0-621-4CWHOB1/4BOREALUM/STL (Regal-Beloit Corporation Dba Fasco Group Div Cassville Division), 1165755 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 728056 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 4140-00-314-1025?

There are 3 known substitutes for 4140-00-314-1025: 4140-00-054-5835, 4140-00-322-7016, 2040-00-480-9118. Verify interchangeability with system specifications before substitution.

What are the specifications of 0-621-4CWHOB1/4BOREALUM/STL?

Key specifications for 0-621-4CWHOB1/4BOREALUM/STL: Diameter: 6.000 INCHES NOMINAL IN; Hub Location: BACK; Blade Quantity: 4; Rotation Direction for Which Designed: CLOCKWISE. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4140-00-314-1025 still in active supply?

NSN 4140-00-314-1025 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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