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Technical Data Sheet
PartsTable / COMPONENT / 121-19-21-031
121-19-21-031 ✓ 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: CERAMIC BODY, body_style: TOP MOUNT W/METAL SADDLE, overall_width: 0.953 INCHES MAXIMUM IN, overall_height: 0.750 INCHES MAXIMUM IN, overall_length: 1.406 INCHES MAXIMUM IN, mounting_method: SADDLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5935-00-259-0337, 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
121-19-21-031
NSN: 5935-00-259-0337
FSC: 5935
CAGE: 71785 — CINCH CONNECTIVITY SOLUTIONS INC. (USA)
SPECIFICATIONS
materialCERAMIC BODY
body_styleTOP MOUNT W/METAL SADDLE
overall_width0.953 INCHES MAXIMUM IN
overall_height0.750 INCHES MAXIMUM IN
overall_length1.406 INCHES MAXIMUM IN
mounting_methodSADDLE
features_providedCENTER SHIELD
surface_treatmentCOPPER CONTACT
fabrication_methodMOLDED
mounting_hole_styleROUND, W/TWO MOUNTING HOLES
mounting_hole_diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
terminal_type_and_quantity9 TAB, SOLDER LUG
NSN5935-00-259-0337
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SOCKET,PLUG-IN ELECTRONIC COMPON TITLE COMPONENT PN 121-19-21-031 MFR SOCKET,PLUG-IN ELECTRO
KEY FEATURES
•
BODY MOUNTING HOLE ACCOMMODATION DIAMETER: 0.745 INCHES MAXIMUM IN
•
FABRICATION METHOD: MOLDED
•
MOUNTING METHOD: SADDLE
•
BODY STYLE: TOP MOUNT W/METAL SADDLE
•
DISTANCE BETWEEN MOUNTING FACILITY CENTERS: 1.120 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY MOUNTING HOLE ACCOMMODATION DIAMETER0.745 INCHES MAXIMUM IN
FABRICATION METHODMOLDED
MOUNTING METHODSADDLE
BODY STYLETOP MOUNT W/METAL SADDLE
OVERALL LENGTH1.406 INCHES MAXIMUM IN
OVERALL HEIGHT0.750 INCHES MAXIMUM IN
DISTANCE BETWEEN MOUNTING FACILITY CENTERS1.120 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN
OVERALL WIDTH0.953 INCHES MAXIMUM IN
MOUNTING HOLE DIAMETER0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
SPECIFIC EQUIPMENT ACCOMMODATEDELECTRON TUBE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
587B5-7Interchangeable
interchangeable cross-reference
interchangeable
4182250-8Interchangeable
interchangeable cross-reference
interchangeable
SMU195-125Interchangeable
interchangeable cross-reference
interchangeable
TS103C02Interchangeable
interchangeable cross-reference
interchangeable
MS91513-1Interchangeable
interchangeable cross-reference
interchangeable
MILS12883-9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121-19-21-031?
121-19-21-031 is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace 121-19-21-031?
There are 13 known substitutes for 121-19-21-031: 587B5-7, 4182250-8, SMU195-125 and 10 more. Substitute compatibility should be verified for your specific system.
Is 121-19-21-031 still available?
121-19-21-031 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