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Technical Data Sheet
PartsTable / COMPONENT / 55-C
55-C ✓ 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

SOCKET,PLUG-IN ELECTRONIC COMPON. Key specifications include material: UNABLE TO DECODE, base_type: SWIVEL, base_style: TELEPHONE SLIDE NUMBER ONE, body_style: STRIP, bulb_style: T (TUBULAR), throat_depth: 4.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5940-00-079-1575, 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
55-C
NSN: 5940-00-079-1575
FSC: 5940
CAGE: 71785 — CINCH CONNECTIVITY SOLUTIONS INC. (USA)
SPECIFICATIONS
materialUNABLE TO DECODE
base_typeSWIVEL
base_styleTELEPHONE SLIDE NUMBER ONE
body_styleSTRIP
bulb_styleT (TUBULAR)
throat_depth4.500 INCHES NOMINAL IN
overall_length1.688 INCHES MAXIMUM IN
voltage_rating55.000 VOLTS NOMINAL
wattage_rating2.475 WATTS AND 3.300 WATTS
board_thickness0.062 INCHES IN
bulb_designatorT-2
outside_diameter1.940 INCHES NOMINAL IN
NSN5940-00-079-1575
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SOCKET,PLUG-IN ELECTRONIC COMPON TITLE COMPONENT PN 55-C MFR SOCKET,PLUG-IN ELECTRO
KEY FEATURES
•
BOARD CONSTRUCTION: SOLID CONSTRUCTION
•
TERMINAL STRIP DESIGN: R3-L3-R3-R3-R3-L3-R3
•
SURFACE TREATMENT: CADMIUM TERMINALS
•
MATERIAL: PLASTIC BOARD
•
BOARD HEIGHT EXCLUDING TERMINALS: 0.375 INCHES IN
•
BOARD OVERALL HEIGHT: 0.656 INCHES IN
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 1.500 INCHES IN
•
MOUNTING FACILITY TYPE AND QUANTITY: 2 FEET FT
TECHNICAL CHARACTERISTICS (FLIS)
BOARD CONSTRUCTIONSOLID CONSTRUCTION
TERMINAL STRIP DESIGNR3-L3-R3-R3-R3-L3-R3
SURFACE TREATMENTCADMIUM TERMINALS
MATERIALPLASTIC BOARD
BOARD HEIGHT EXCLUDING TERMINALS0.375 INCHES IN
BOARD OVERALL HEIGHT0.656 INCHES IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH1.500 INCHES IN
MOUNTING FACILITY TYPE AND QUANTITY2 FEET FT
MATERIALSTEEL TERMINALS
BOARD OVERALL LENGTH2.625 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
826Interchangeable
interchangeable cross-reference
interchangeable
916Interchangeable
interchangeable cross-reference
interchangeable
PR16Interchangeable
interchangeable cross-reference
interchangeable
3951910Interchangeable
interchangeable cross-reference
interchangeable
FF-B-171/5Interchangeable
interchangeable cross-reference
interchangeable
444T-229Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55-C?
55-C is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace 55-C?
There are 31 known substitutes for 55-C: 826, 916, PR16 and 28 more. Substitute compatibility should be verified for your specific system.
Is 55-C still available?
55-C is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026