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Technical Data Sheet
PartsTable / COMPONENT / 443431-1
443431-1 ✓ 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 COUPLER,DIRECTIONAL is a the manufacturer industrial component. Key specifications include unit_type: COAXIAL LINE, design_type: BIDIRECTIONAL, overall_width: 2.312 INCHES NOMINAL IN, overall_height: 0.374 INCHES NOMINAL IN, overall_length: 4.000 INCHES NOMINAL IN, identifying_number: TERMINAL FITTING PART NO. 373414-1.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-327-4391, 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
443431-1
NSN: 5985-00-327-4391
FSC: 5985
CAGE: 54X10 — RAYTHEON COMPANY (USA)
SPECIFICATIONS
unit_typeCOAXIAL LINE
design_typeBIDIRECTIONAL
overall_width2.312 INCHES NOMINAL IN
overall_height0.374 INCHES NOMINAL IN
overall_length4.000 INCHES NOMINAL IN
identifying_numberTERMINAL FITTING PART NO. 373414-1
fsc_application_dataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
power_loss_in_decibels30.0
terminal_fitting_controlling_agencyRAYTHEON COMPANY
NSN5985-00-327-4391
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLER,DIRECTIONAL TITLE COMPONENT PN 443431-1 MFR COUPLER,DIRECTIONAL
KEY FEATURES
•
DESIGN TYPE: BIDIRECTIONAL
•
TERMINAL FITTING CONTROLLING AGENCY: RAYTHEON COMPANY
•
UNIT TYPE: COAXIAL LINE
•
IDENTIFYING NUMBER: TERMINAL FITTING PART NO. 373414-1
•
POWER LOSS IN DECIBELS: 30.0
•
FSC APPLICATION DATA: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
TECHNICAL CHARACTERISTICS (FLIS)
DESIGN TYPEBIDIRECTIONAL
TERMINAL FITTING CONTROLLING AGENCYRAYTHEON COMPANY
UNIT TYPECOAXIAL LINE
IDENTIFYING NUMBERTERMINAL FITTING PART NO. 373414-1
POWER LOSS IN DECIBELS30.0
FSC APPLICATION DATAANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
OVERALL HEIGHT0.374 INCHES NOMINAL IN
OVERALL WIDTH2.312 INCHES NOMINAL IN
OVERALL LENGTH4.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
RW30G161Interchangeable
interchangeable cross-reference
interchangeable
522621Interchangeable
interchangeable cross-reference
interchangeable
MILR26Interchangeable
interchangeable cross-reference
interchangeable
8R5Interchangeable
interchangeable cross-reference
interchangeable
101-03-10-210Interchangeable
interchangeable cross-reference
interchangeable
ES684279-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 443431-1?
443431-1 is a COUPLER,DIRECTIONAL.
What parts can replace 443431-1?
There are 12 known substitutes for 443431-1: RW30G161, 522621, MILR26 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 443431-1?
443431-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-327-4391. 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