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Technical Data Sheet
PartsTable / MRO / 66A73D51
66A73D51 ✓ 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 body_length: 4.150 INCHES NOMINAL IN, body_material: METAL, inclosure_type: HERMETICALLY SEALED, overall_length: 5.730 INCHES NOMINAL IN, style_designator: ROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES, maximum_temp_rise: 25.0 CELSIUS DEGC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-866-4280, 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→ 66A73D51
NSN: 5915-00-866-4280
FSC: 5915
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
body_length4.150 INCHES NOMINAL IN
body_materialMETAL
inclosure_typeHERMETICALLY SEALED
overall_length5.730 INCHES NOMINAL IN
style_designatorROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES
maximum_temp_rise25.0 CELSIUS DEGC
nominal_thread_size0.625 INCHES IN
operating_temp_range-55.0 TO 85.0 CELSIUS DEGC
body_outside_diameter1.370 INCHES NOMINAL IN
body_surface_treatmentTIN
load_impedance_per_function50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
maximum_voltage_drop_per_function500.0 MILLIVOLTS AC BLANK LOCATION NOT OTHERWISE SPECIFIED
NSN5915-00-866-4280
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER,RADIO FREQUENCY INTERFERE TITLE COMPONENT PN 66A73D51 MFR FILTER,RADIO FREQUENCY
KEY FEATURES
•
FUNCTIONAL TERMINAL TYPE AND QUANTITY: 1 THREADED STUD INPUT FIRST FUNCTION
•
BODY LENGTH: 4.150 INCHES NOMINAL IN
•
OPERATING VOLTAGE RATING AND TYPE PER FUNCTION: 130.0 VOLTS AC BLANK LOCATION NOT OTHERWISE SPECIFIED
•
MAXIMUM DIELECTRIC WITHSTANDING DC VOLTAGE: 800.0 VOLTS AT SEA LEVEL
•
BODY SURFACE TREATMENT: TIN
•
STYLE DESIGNATOR: ROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES
•
SOURCE IMPEDANCE RATING PER FUNCTION: 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 THREADED STUD INPUT FIRST FUNCTION
BODY LENGTH4.150 INCHES NOMINAL IN
OPERATING VOLTAGE RATING AND TYPE PER FUNCTION130.0 VOLTS AC BLANK LOCATION NOT OTHERWISE SPECIFIED
MAXIMUM DIELECTRIC WITHSTANDING DC VOLTAGE800.0 VOLTS AT SEA LEVEL
BODY SURFACE TREATMENTTIN
STYLE DESIGNATORROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES
SOURCE IMPEDANCE RATING PER FUNCTION50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
NOMINAL THREAD SIZE0.625 INCHES IN
OVERALL LENGTH5.730 INCHES NOMINAL IN
MAXIMUM VOLTAGE DROP PER FUNCTION500.0 MILLIVOLTS AC BLANK LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
A57-3Interchangeable
interchangeable cross-reference
interchangeable
1228997-1Interchangeable
interchangeable cross-reference
interchangeable
771017-4Interchangeable
interchangeable cross-reference
interchangeable
771017PC4Interchangeable
interchangeable cross-reference
interchangeable
FA3101Interchangeable
interchangeable cross-reference
interchangeable
SP200Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 66A73D51?
66A73D51 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 66A73D51?
There are 8 known substitutes for 66A73D51: A57-3, 1228997-1, 771017-4 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 66A73D51?
66A73D51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-866-4280. 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