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Technical Data Sheet

A31/2A4W6-TP — FAN,VANEAXIAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A31/2A4W6-TP: FAN,VANEAXIAL.

The FAN,VANEAXIAL is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include end_item_identification: FAN, VANAXIAL. This part is cataloged in the U.S.

Government catalog under NSN 4140-01-279-0556, 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
A31/2A4W6-TP
NSN: 4140-01-279-0556
NIINs: 012790556, 016020616
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
end_item_identificationFAN, VANAXIAL
NSN4140-01-279-0556
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FAN,VANEAXIAL TITLE COMPONENT PN A31/2A4W6-TP MFR FAN,VANEAXIAL
KEY FEATURES
•
MOUNTING FACILITY TYPE AND QUANTITY: 2 FLANGE AND 48 UNTHREADED HOLE(S)
•
SPEED ADJUSTMENTS: SINGLE SPEED
•
PHASE: THREE
•
FREQUENCY IN HERTZ: 60.0
•
INCLOSURE TYPE: FULLY INCLOSED
•
LENGTH: 26.000 INCHES NOMINAL IN
•
VOLTAGE IN VOLTS AND CURRENT TYPE: 440.0 AC
•
FLOW DIRECTION: OUTWARD
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY TYPE AND QUANTITY2 FLANGE AND 48 UNTHREADED HOLE(S)
SPEED ADJUSTMENTSSINGLE SPEED
PHASETHREE
FREQUENCY IN HERTZ60.0
INCLOSURE TYPEFULLY INCLOSED
LENGTH26.000 INCHES NOMINAL IN
VOLTAGE IN VOLTS AND CURRENT TYPE440.0 AC
FLOW DIRECTIONOUTWARD
HOUSING INSIDE DIAMETER22.125 INCHES NOMINAL IN
DRIVE TYPEDIRECT
SUBSTITUTES & CROSS-REFERENCES 4
R1-5580-CD-3517Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-F-18953Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-PRF-18953Reference document
Same NSN cross-reference
Reference document — Identification reference
M18953-AA03HA4W6NATPNASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 A31/2A4W6-TP?
A31/2A4W6-TP is a FAN,VANEAXIAL.
What parts can replace A31/2A4W6-TP?
There are 4 known substitutes for A31/2A4W6-TP: R1-5580-CD-3517, MIL-F-18953, MIL-PRF-18953 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A31/2A4W6-TP?
A31/2A4W6-TP is cataloged in the U.S. Government catalog under NSN 4140-01-279-0556. 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.