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489166 — IMPELLER,FAN,CENTRIFUGAL

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

489166: 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: A/M32A-86 GENERATOR. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-945-0838, 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
489166
NSN: 5310-00-945-0838
NIINs: 009450838, 011007636
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
end_item_identificationA/M32A-86 GENERATOR
NSN5310-00-945-0838
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 489166 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WASHER OUTSIDE DIAMETER: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.368 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
•
THREAD PITCH DIAMETERS: +0.2720 TO 0.2800 INCHES IN
•
WASHER THICKNESS: 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.368 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
THREAD SERIESUNF
THREAD PITCH DIAMETERS+0.2720 TO 0.2800 INCHES IN
WASHER THICKNESS0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 489166?
489166 is a IMPELLER,FAN,CENTRIFUGAL.
What is the NSN for 489166?
489166 is cataloged in the U.S. Government catalog under NSN 5310-00-945-0838. 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.