PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66-5-2002Impeller,fan,axial

Fre Enterprises · NSN 4140-00-177-0140 · FSC 4140 · No Item Name Available
Verified by PartsTable
NSN 4140-00-177-0140 — this item is cataloged by the U.S. Government under National Stock Number 4140-00-177-0140. Primary manufacturer part number: 66-5-2002.
Features
  • Impeller,fan,axial — FSC 4140
  • Hub Location: FRONT
  • Rotation Direction for Which Designed: CLOCKWISE
  • Attachment Method: KEYWAY
  • Blade Quantity: 8
  • Material: ALUMINUM ALLOY OVERALL
  • Style Designator: STRAIGHT TIP
  • Diameter: 24.185 INCHES MINIMUM AND 24.200 INCHES MAXIMUM IN
Applications
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Impeller,fan,axial, cataloged under National Stock Number 4140-00-177-0140, 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 Fre Enterprises. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4140-00-177-0140
Primary Part Number66-5-2002
Item NameImpeller,fan,axial
FSC / FSG4140 / 41 — No Item Name Available
ManufacturerFre Enterprises
StatusACTIVE
Hub LocationFRONT
Rotation Direction for Which DesignedCLOCKWISE
Attachment MethodKEYWAY
Blade Quantity8
MaterialALUMINUM ALLOY OVERALL
Style DesignatorSTRAIGHT TIP
Diameter24.185 INCHES MINIMUM AND 24.200 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-00-016-1016665200-2 INTERCHANGEABLE
Valve,restrictor Check
Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)
4710-00-257-094954652 INTERCHANGEABLE
Tube,air
Midwest Motor Supply Co. Dba Midwest Motor Supply Co Div Kimball Midwest
5995-01-344-911454652 INTERCHANGEABLE
Cable Assembly,radio Frequency
Semflex, Inc.
Cross-Reference Index
Part NumberManufacturer
B604-1016 Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters (USA)
66-5-2002 PRIMARY Fre Enterprises (USA)
B604-1016 Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc (USA)
54652 Keco Industries, Inc. (USA)
Related Parts
4820-00-016-1016INTERCHANGEABLE
VALVE,RESTRICTOR CHECK
665200-2
4710-00-257-0949INTERCHANGEABLE
TUBE,AIR
54652
5995-01-344-9114INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
54652

Frequently Asked Questions

What is NSN 4140-00-177-0140?

NSN 4140-00-177-0140 is a Impeller,fan,axial, manufactured by Fre Enterprises, classified under FSC 4140 (No Item Name Available). Status: active.

What are the part numbers for NSN 4140-00-177-0140?

NSN 4140-00-177-0140 has 4 cross-referenced part numbers: B604-1016 (Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters), 66-5-2002 (Fre Enterprises), B604-1016 (Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc), 54652 (Keco Industries, Inc.).

What NSN replaces 4140-00-177-0140?

There are 3 known substitutes for 4140-00-177-0140: 4820-00-016-1016, 4710-00-257-0949, 5995-01-344-9114. Verify interchangeability with system specifications before substitution.

What are the specifications of 66-5-2002?

Key specifications for 66-5-2002: Hub Location: FRONT; Rotation Direction for Which Designed: CLOCKWISE; Special Features: MAY INCLUDE SETSCREW IN ADDITION TO KEYWAY,CW ROTATION VIEWED FROM HUB PROJECTION END FACING AIR DISCHARGE,O/A LG 4.00 IN. MIN,4.54 IN. MAX MEASURED ON AXIS OF BORE IN; Attachment Method: KEYWAY. 8 total characteristics are documented in the Federal Logistics Information System.

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