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PartsTable / COMPONENT / 721857-39
721857-39 ✓ 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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include body_length: 3.000 INCHES NOMINAL IN, body_diameter: 0.635 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN, terminal_type: WIRE LEAD, thread_length: 0.710 INCHES NOMINAL SINGLE THREADED BUSHING IN, overall_length: 3.380 INCHES NOMINAL IN, mounting_method: THREADED BUSHING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-01-123-9509, 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
721857-39
NSN: 5930-01-123-9509
FSC: 5930
CAGE: 05869 — RAYTHEON COMPANY DIV RMD STRATEGIC (USA)
SPECIFICATIONS
body_length3.000 INCHES NOMINAL IN
body_diameter0.635 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN
terminal_typeWIRE LEAD
thread_length0.710 INCHES NOMINAL SINGLE THREADED BUSHING IN
overall_length3.380 INCHES NOMINAL IN
mounting_methodTHREADED BUSHING
style_designatorCYLINDRICAL W/FLANGE
width_across_flats1.000 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES SINGLE THREADED BUSHING IN
contact_adjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
contact_action_stimulusINCREASE
contact_stimulus_rating145.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 140.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
NSN5930-01-123-9509
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER,RADIO FREQUENCY INTERFERE TITLE COMPONENT PN 721857-39 MFR FILTER,RADIO FREQUENCY
KEY FEATURES
•
CONTACT LOAD CURRENT RATING: 2.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
•
STYLE DESIGNATOR: CYLINDRICAL W/FLANGE
•
CONTACT ADJUSTABILITY: DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
•
CONTACT VOLTAGE RATING IN VOLTS: 115.0 AC AT SEA LEVEL FIRST VOLTAGE
•
WIDTH ACROSS FLATS: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CONTACT LOAD CURRENT RATING2.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
STYLE DESIGNATORCYLINDRICAL W/FLANGE
OVERALL LENGTH3.380 INCHES NOMINAL IN
END ITEM IDENTIFICATIONHULL OBRP
CONTACT ADJUSTABILITYDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
CONTACT VOLTAGE RATING IN VOLTS115.0 AC AT SEA LEVEL FIRST VOLTAGE
WIDTH ACROSS FLATS1.000 INCHES NOMINAL IN
CONTACT LOAD CURRENT RATING5.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE
NONPILE-UP CONTACT ARRANGEMENT1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
THREAD SERIES DESIGNATORNPT SINGLE THREADED BUSHING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
R21926Interchangeable
interchangeable cross-reference
interchangeable
21926Interchangeable
interchangeable cross-reference
interchangeable
15BAInterchangeable
interchangeable cross-reference
interchangeable
386645Interchangeable
interchangeable cross-reference
interchangeable
FA11-664Interchangeable
interchangeable cross-reference
interchangeable
7406388Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 721857-39?
721857-39 is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace 721857-39?
There are 11 known substitutes for 721857-39: R21926, 21926, 15BA and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 721857-39?
721857-39 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-01-123-9509. 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