04-21657 — GUARD,FAN IMPELLER

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

04-21657: GUARD,FAN IMPELLER.

The GUARD,FAN IMPELLER is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include shape: ROUND, body_material: STEEL, overall_diameter: 262.0 MILLIMETERS NOMINAL MM, surface_treatment: PAINT, end_item_identification: 6115-01-561-7718;GENERATOR SET,DIESEL ENGINE, part_name_assigned_by_controlling_agency: GUARD,FAN. This part is cataloged in the U.S.

Government catalog under NSN 4140-01-668-9251, 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

04-21657

NSN: 4140-01-668-9251
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
CAGE: 30554 — DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER (USA)

SPECIFICATIONS

shape	ROUND
body_material	STEEL
overall_diameter	262.0 MILLIMETERS NOMINAL MM
surface_treatment	PAINT
end_item_identification	6115-01-561-7718;GENERATOR SET,DIESEL ENGINE
part_name_assigned_by_controlling_agency	GUARD,FAN
NSN	4140-01-668-9251

COMPONENT DIAGRAM

KEY FEATURES

•

OVERALL DIAMETER: 262.0 MILLIMETERS NOMINAL MM

•

SHAPE: ROUND

•

BODY MATERIAL: STEEL

•

SURFACE TREATMENT: PAINT

TYPICAL APPLICATIONS

Server thermal management and cooling
Hot-swap fan replacement in production environments
Redundant cooling for high-availability systems

TECHNICAL CHARACTERISTICS

OVERALL DIAMETER	262.0 MILLIMETERS NOMINAL MM
SHAPE	ROUND
BODY MATERIAL	STEEL
SURFACE TREATMENT	PAINT
PART NAME ASSIGNED BY CONTROLLING AGENCY	GUARD,FAN
END ITEM IDENTIFICATION	6115-01-561-7718;GENERATOR SET,DIESEL ENGINE

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

No substitute or cross-reference records for this part.

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 04-21657?

04-21657 is a GUARD,FAN IMPELLER.

What is the NSN for 04-21657?

04-21657 is cataloged in the U.S. Government catalog under NSN 4140-01-668-9251. This indicates validated use in U.S. government and defense supply chains.

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04-21657 — GUARD,FAN IMPELLER

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