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158291 — IMPELLER,FAN,CENTRIFUGAL

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

158291: 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 end_item_identification: USED ON TTY EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 4140-00-369-9770, 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
MRO→ MRO_GENERAL→ 158291
NSN: 4140-00-369-9770
NIINs: 003699770, 007756498
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
CAGE: 82877 — ROTRON INCORPORATED (USA)
SPECIFICATIONS
end_item_identificationUSED ON TTY EQUIPMENT
NSN4140-00-369-9770
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available IMPELLER,FAN,CENTRIFUGAL TITLE COMPONENT PN 158291 MFR IMPELLER,FAN,CENTRIFUG
KEY FEATURES
•
STYLE DESIGNATOR: CURVED BLADES SINGLE WIDTH
•
ATTACHMENT METHOD: SETSCREW
•
DIAMETER: 5.200 INCHES MINIMUM AND 5.270 INCHES MAXIMUM IN
•
BLADE SHAPE: FORWARD CURVE
•
BLADE QUANTITY: 29
•
WIDTH: 2.440 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
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
DIAMETER5.200 INCHES MINIMUM AND 5.270 INCHES MAXIMUM IN
BLADE SHAPEFORWARD CURVE
BLADE QUANTITY29
SPECIAL FEATURESCW ROTATION VIEWED FROM CLOSED SIDE OF WHEEL; 4600 RPM MAX. RPM
WIDTH2.440 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
ROTATION DIRECTION FOR WHICH DESIGNEDCLOCKWISE
SUBSTITUTES & CROSS-REFERENCES 5
AA-508-216-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
A9266-13Reference document
Same NSN cross-reference
Reference document — Secondary reference
AA508-216-2CWSTL/ZINC 0.5BOREReference document
Same NSN cross-reference
Reference document — Secondary reference
16149-03Reference document
Same NSN cross-reference
Reference document — Secondary reference
9073323-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 158291?
158291 is a IMPELLER,FAN,CENTRIFUGAL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 158291?
There are 5 known substitutes for 158291: AA-508-216-2, A9266-13, AA508-216-2CWSTL/ZINC 0.5BORE and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 158291?
158291 is cataloged in the U.S. Government catalog under NSN 4140-00-369-9770. 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.