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221425R1 — IMPELLER,FAN,CENTRIFUGAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

221425R1: IMPELLER,FAN,CENTRIFUGAL.

The IMPELLER,FAN,CENTRIFUGAL is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include blade_quantity: 12, attachment_method: KEYWAY, end_item_identification: 3930-01-076-4237 FORK LIFT TRUCK, part_name_assigned_by_controlling_agency: FAN. This part is cataloged in the U.S.

Government catalog under NSN 4140-00-949-1659, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
221425R1
NSN: 4140-00-949-1659
NIINs: 009491659, 015623619
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
blade_quantity12
attachment_methodKEYWAY
end_item_identification3930-01-076-4237 FORK LIFT TRUCK
part_name_assigned_by_controlling_agencyFAN
NSN4140-00-949-1659
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available IMPELLER,FAN,CENTRIFUGAL TITLE COMPONENT PN 221425R1 MFR IMPELLER,FAN,CENTRIFUG
KEY FEATURES
•
STYLE DESIGNATOR: STRAIGHT RADIAL W/ BACK PLATE
•
ATTACHMENT METHOD: KEYWAY
•
DIAMETER: 5.312 INCHES NOMINAL IN
•
BLADE QUANTITY: 13
•
WIDTH: 0.593 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
ROTATION DIRECTION FOR WHICH DESIGNED: CLOCKWISE
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTRAIGHT RADIAL W/ BACK PLATE
ATTACHMENT METHODKEYWAY
DIAMETER5.312 INCHES NOMINAL IN
BLADE QUANTITY13
WIDTH0.593 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
ROTATION DIRECTION FOR WHICH DESIGNEDCLOCKWISE
SUBSTITUTES & CROSS-REFERENCES 7
1940994Reference document
Same NSN cross-reference
Reference document — Secondary reference
727Y1Reference document
Same NSN cross-reference
Reference document — Secondary reference
70650942Reference document
Same NSN cross-reference
Reference document — Secondary reference
126358Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1966990Reference document
Same NSN cross-reference
Reference document — Secondary reference
195549H1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 221425R1?
221425R1 is a IMPELLER,FAN,CENTRIFUGAL.
What parts can replace 221425R1?
There are 7 known substitutes for 221425R1: 1940994, 727Y1, 70650942 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 221425R1?
221425R1 is cataloged in the U.S. Government catalog under NSN 4140-00-949-1659. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.