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B7418851P1 — IMPELLER,FAN,CENTRIFUGAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

B7418851P1: 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 width: 1.156 INCHES NOMINAL IN, diameter: 4.250 INCHES NOMINAL IN, material: STEEL BLADE, blade_shape: FORWARD CURVE, special_features: CW ROTATION VIEWED FROM CLOSED SIDE OF WHEEL, style_designator: CURVED BLADES SINGLE WIDTH. This part is cataloged in the U.S.

Government catalog under NSN 4140-00-289-8029, 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
B7418851P1
NSN: 4140-00-289-8029
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
width1.156 INCHES NOMINAL IN
diameter4.250 INCHES NOMINAL IN
materialSTEEL BLADE
blade_shapeFORWARD CURVE
special_featuresCW ROTATION VIEWED FROM CLOSED SIDE OF WHEEL
style_designatorCURVED BLADES SINGLE WIDTH
attachment_methodSETSCREW
rotation_direction_for_which_designedCLOCKWISE
NSN4140-00-289-8029
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available IMPELLER,FAN,CENTRIFUGAL TITLE COMPONENT PN B7418851P1 MFR IMPELLER,FAN,CENTRIFUG
KEY FEATURES
•
STYLE DESIGNATOR: CURVED BLADES SINGLE WIDTH
•
ATTACHMENT METHOD: SETSCREW
•
DIAMETER: 4.250 INCHES NOMINAL IN
•
BLADE SHAPE: FORWARD CURVE
•
WIDTH: 1.156 INCHES NOMINAL IN
•
MATERIAL: STEEL BLADE
•
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 DESIGNATORCURVED BLADES SINGLE WIDTH
ATTACHMENT METHODSETSCREW
DIAMETER4.250 INCHES NOMINAL IN
BLADE SHAPEFORWARD CURVE
SPECIAL FEATURESCW ROTATION VIEWED FROM CLOSED SIDE OF WHEEL
WIDTH1.156 INCHES NOMINAL IN
MATERIALSTEEL BLADE
ROTATION DIRECTION FOR WHICH DESIGNEDCLOCKWISE
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 4140-00-001-1517 4140-00-001-1536 4140-00-001-1537 4140-00-001-3930 4140-00-001-6464 4140-00-001-6874 4140-00-001-6875
SUBSTITUTES & CROSS-REFERENCES 1
AA408-105-1CWSTL 0.312 BOREReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B7418851P1?
B7418851P1 is a IMPELLER,FAN,CENTRIFUGAL.
What parts can replace B7418851P1?
There is 1 known substitute for B7418851P1: AA408-105-1CWSTL 0.312 BORE. Substitute compatibility should be verified for your specific system.
What is the NSN for B7418851P1?
B7418851P1 is cataloged in the U.S. Government catalog under NSN 4140-00-289-8029. 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.