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Technical Data Sheet
PartsTable / COMPONENT / 990C056H01
990C056H01 ✓ 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 OR TRANSMISSION LINE, design_type: BIDIRECTIONAL OR UNIDIRECTIONAL, usage_design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING, overall_width: 2.440 INCHES NOMINAL IN, overall_height: 0.880 INCHES NOMINAL IN, overall_length: 6.060 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 5985-00-168-8901, 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
990C056H01
NSN: 5985-00-168-8901
FSC: 5985
CAGE: 18323 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA ELECTRONIC SYSTEMS (USA)
SPECIFICATIONS
unit_typeCOAXIAL LINE OR TRANSMISSION LINE
design_typeBIDIRECTIONAL OR UNIDIRECTIONAL
usage_designMAIN LINE AND SECONDARY LINE TERMINAL FITTING
overall_width2.440 INCHES NOMINAL IN
overall_height0.880 INCHES NOMINAL IN
overall_length6.060 INCHES NOMINAL IN
end_item_identificationAN/ALQ-119(V)
NSN5985-00-168-8901
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLER,DIRECTIONAL TITLE COMPONENT PN 990C056H01 MFR COUPLER,DIRECTIONAL
KEY FEATURES
•
USAGE DESIGN: MAIN LINE AND SECONDARY LINE TERMINAL FITTING
•
DESIGN TYPE: BIDIRECTIONAL OR UNIDIRECTIONAL
•
UNIT TYPE: COAXIAL LINE OR TRANSMISSION LINE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH2.440 INCHES NOMINAL IN
USAGE DESIGNMAIN LINE AND SECONDARY LINE TERMINAL FITTING
DESIGN TYPEBIDIRECTIONAL OR UNIDIRECTIONAL
OVERALL HEIGHT0.880 INCHES NOMINAL IN
OVERALL LENGTH6.060 INCHES NOMINAL IN
UNIT TYPECOAXIAL LINE OR TRANSMISSION LINE
END ITEM IDENTIFICATIONAN/ALQ-119(V)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
22500Interchangeable
interchangeable cross-reference
interchangeable
22500MInterchangeable
interchangeable cross-reference
interchangeable
0812696-3Interchangeable
interchangeable cross-reference
interchangeable
C3436AARN30DInterchangeable
interchangeable cross-reference
interchangeable
40172 REV A FIND 33Interchangeable
interchangeable cross-reference
interchangeable
40143-10 REV A PIECE 46Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 990C056H01?
990C056H01 is a COUPLER,DIRECTIONAL.
What parts can replace 990C056H01?
There are 11 known substitutes for 990C056H01: 22500, 22500M, 0812696-3 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 990C056H01?
990C056H01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-168-8901. 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