PartsTable
Technical Data Sheet
PartsTable / MRO / A2-78
A2-78 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include width: 2.375 INCHES NOMINAL IN, material: STEEL COMP 303, blade_type: STRAIGHT, body_style: HAND HELD, body_width: 1.300 INCHES NOMINAL IN, hub_length: 7.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5965-00-321-8456, 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→ A2-78
NSN: 5965-00-321-8456
FSC: 5965
CAGE: 73274 — HOSE-MCCANN TELEPHONE CO, INC (USA)
SPECIFICATIONS
width2.375 INCHES NOMINAL IN
materialSTEEL COMP 303
blade_typeSTRAIGHT
body_styleHAND HELD
body_width1.300 INCHES NOMINAL IN
hub_length7.000 INCHES NOMINAL IN
body_height0.880 INCHES NOMINAL IN
body_length2.700 INCHES NOMINAL IN
design_typeSINGLE WIDTH
keyway_typeSQUARE
hub_locationSINGLE STRAIGHT
hub_quantity1
NSN5965-00-321-8456
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER,RADIO FREQUENCY INTERFERE TITLE COMPONENT PN A2-78 MFR FILTER,RADIO FREQUENCY
KEY FEATURES
•
WIDTH: 2.375 INCHES NOMINAL IN
•
BODY STYLE: HAND HELD
•
EXTENDED CABLE LENGTH: 3.5 FEET NOMINAL FT
•
FSC APPLICATION DATA: HEADSETS,HANDSETS,MICROPHONE AND SPEAKERS
•
SOUND PICKUP DIRECTIONAL TYPE: UNIDIRECTIONAL
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH2.375 INCHES NOMINAL IN
BODY STYLEHAND HELD
SPECIAL FEATURESRECEIVER AND TRANSMITTER
EXTENDED CABLE LENGTH3.5 FEET NOMINAL FT
FSC APPLICATION DATAHEADSETS,HANDSETS,MICROPHONE AND SPEAKERS
SOUND PICKUP DIRECTIONAL TYPEUNIDIRECTIONAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
R311-4-2Interchangeable
interchangeable cross-reference
interchangeable
R310-4-2Interchangeable
interchangeable cross-reference
interchangeable
A278Interchangeable
interchangeable cross-reference
interchangeable
10545004Interchangeable
interchangeable cross-reference
interchangeable
JN14-1600BInterchangeable
interchangeable cross-reference
interchangeable
FA7349Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A2-78?
A2-78 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace A2-78?
There are 12 known substitutes for A2-78: R311-4-2, R310-4-2, A278 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A2-78?
A2-78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5965-00-321-8456. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026