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Technical Data Sheet
PartsTable / COMPONENT / 2178A
2178A ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The HORN,SIGNAL is a the manufacturer industrial component. Key specifications include length: 0.437 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, diameter: 0.187 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, material: STEEL CORROSION RESISTING OVERALL, special_features: W/ 0.125 IN. DIA X 0.062 IN.

DP HOLE IN CENTER OF HEAD;USED ON GRUMMAN AIRCRAFT,MODEL A-10 IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6350-01-252-6290, 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
2178A
NSN: 6350-01-252-6290
FSC: 6350
CAGE: 62080 — WINDHAM LIFTS INC (USA)
SPECIFICATIONS
length0.437 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
diameter0.187 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
materialSTEEL CORROSION RESISTING OVERALL
special_featuresW/ 0.125 IN. DIA X 0.062 IN. DP HOLE IN CENTER OF HEAD;USED ON GRUMMAN AIRCRAFT,MODEL A-10 IN
NSN6350-01-252-6290
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HORN,SIGNAL TITLE COMPONENT PN 2178A MFR HORN,SIGNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
AMS-QQA200-3Interchangeable
interchangeable cross-reference
interchangeable
QQA200-3Interchangeable
interchangeable cross-reference
interchangeable
1M223Interchangeable
interchangeable cross-reference
interchangeable
21003380-21-338Interchangeable
interchangeable cross-reference
interchangeable
6772Interchangeable
interchangeable cross-reference
interchangeable
21-78Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2178A?
2178A is a HORN,SIGNAL.
What parts can replace 2178A?
There are 27 known substitutes for 2178A: AMS-QQA200-3, QQA200-3, 1M223 and 24 more. Substitute compatibility should be verified for your specific system.
Is 2178A still available?
2178A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026