PartsTable
Technical Data Sheet
PartsTable / MRO / 51321-P1
51321-P1 ✓ 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: 0.497 INCHES MAXIMUM IN, body_material: METAL, inclosure_type: ENCASED, overall_length: 0.892 INCHES MAXIMUM IN, style_designator: ROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES, maximum_temp_rise: 15.0 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 5915-01-104-7414, 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→ 51321-P1
NSN: 5915-01-104-7414
FSC: 5915
CAGE: 26629 — LOCKHEED MARTIN CORPORATION (USA)
SPECIFICATIONS
body_length0.497 INCHES MAXIMUM IN
body_materialMETAL
inclosure_typeENCASED
overall_length0.892 INCHES MAXIMUM IN
style_designatorROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES
maximum_temp_rise15.0 CELSIUS DEGC
precious_materialSILVER
width_across_flats0.265 INCHES MAXIMUM IN
nominal_thread_size0.164 INCHES IN
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
load_impedance_per_function50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
specification/standard_data81349-MIL-F-15733/61 GOVERNMENT SPECIFICATION
NSN5915-01-104-7414
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER,RADIO FREQUENCY INTERFERE TITLE COMPONENT PN 51321-P1 MFR FILTER,RADIO FREQUENCY
KEY FEATURES
•
OPERATING CURRENT RATING PER FUNCTION IN AMPS: 5.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
•
BODY LENGTH: 0.497 INCHES MAXIMUM IN
•
PRINCIPAL CIRCUITRY TYPE PER FUNCTION: INDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
•
SOURCE IMPEDANCE RATING PER FUNCTION: 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
•
AVERAGE LIFE RATING IN HOURS: 1000.0
•
INCLOSURE TYPE: ENCASED
•
PRECIOUS MATERIAL AND LOCATION: EXTERNAL SURFACES SILVER
•
TEST DATA DOCUMENT: 81349-MIL-F-15733 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING CURRENT RATING PER FUNCTION IN AMPS5.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
BODY LENGTH0.497 INCHES MAXIMUM IN
PRINCIPAL CIRCUITRY TYPE PER FUNCTIONINDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
SOURCE IMPEDANCE RATING PER FUNCTION50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
AVERAGE LIFE RATING IN HOURS1000.0
INCLOSURE TYPEENCASED
PRECIOUS MATERIAL AND LOCATIONEXTERNAL SURFACES SILVER
TEST DATA DOCUMENT81349-MIL-F-15733 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.265 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
M15733-28-001Interchangeable
interchangeable cross-reference
interchangeable
844752-0001Interchangeable
interchangeable cross-reference
interchangeable
C11865-0001Interchangeable
interchangeable cross-reference
interchangeable
M15733/47-0001Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-15733/61Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-15733/47Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51321-P1?
51321-P1 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 51321-P1?
There are 31 known substitutes for 51321-P1: M15733-28-001, 844752-0001, C11865-0001 and 28 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51321-P1?
51321-P1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-01-104-7414. 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