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21-900423-78 — FILTER ASSEMBLY,ELECTRICAL

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

21-900423-78: FILTER ASSEMBLY,ELECTRICAL.

The FILTER ASSEMBLY,ELECTRICAL is a the manufacturer industrial component. Key specifications include overall_width: 2.025 INCHES MINIMUM AND 2.037 INCHES MAXIMUM IN, overall_height: 1.611 INCHES MAXIMUM IN, overall_length: 2.026 INCHES MINIMUM AND 2.037 INCHES MAXIMUM IN, overall_diameter: 1.227 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN, special_features: NICKEL BASE PLATE COATING, end_item_identification: END ITEM1520012984532 BLACKHAWK HELICOPTER. This part is cataloged in the U.S.

Government catalog under NSN 5915-01-472-6919, 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→ 21-900423-78
NSN: 5915-01-472-6919
FSC: 5915 — Filters and Networks
CAGE: 77820 — AMPHENOL CORP DIV AMPHENOL AEROSPACE OPERATIONS (USA)
SPECIFICATIONS
overall_width2.025 INCHES MINIMUM AND 2.037 INCHES MAXIMUM IN
overall_height1.611 INCHES MAXIMUM IN
overall_length2.026 INCHES MINIMUM AND 2.037 INCHES MAXIMUM IN
overall_diameter1.227 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN
special_featuresNICKEL BASE PLATE COATING
end_item_identificationEND ITEM1520012984532 BLACKHAWK HELICOPTER
NSN5915-01-472-6919
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER ASSEMBLY,ELECTRICAL TITLE COMPONENT PN 21-900423-78 MFR FILTER ASSEMBLY,ELECTR
KEY FEATURES
•
OVERALL DIAMETER: 1.227 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.611 INCHES MAXIMUM IN
OVERALL DIAMETER1.227 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN
OVERALL LENGTH2.026 INCHES MINIMUM AND 2.037 INCHES MAXIMUM IN
OVERALL WIDTH2.025 INCHES MINIMUM AND 2.037 INCHES MAXIMUM IN
SPECIAL FEATURESNICKEL BASE PLATE COATING
END ITEM IDENTIFICATIONEND ITEM1520012984532 BLACKHAWK HELICOPTER
OTHER ITEMS IN FSC 5915 — Filters and Networks
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5915-00-000-0148 5915-00-001-1389 5915-00-001-1621 5915-00-001-2789 5915-00-001-2928 5915-00-001-2936 5915-00-001-3003 5915-00-001-3117
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 21-900423-78?
21-900423-78 is a FILTER ASSEMBLY,ELECTRICAL. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 21-900423-78?
21-900423-78 is cataloged in the U.S. Government catalog under NSN 5915-01-472-6919. 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.