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PartsTable / COMPONENT / ST21900389
ST21900389 ✓ 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 COUPLING,SHAFT,FLEXIBLE is a the manufacturer industrial component. Key specifications include bore_shape: STRAIGHT BOTH ENDS, bore_length: 0.3450 INCHES NOMINAL BOTH ENDS IN, bore_diameter: 0.2500 INCHES NOMINAL BOTH ENDS IN, overall_length: 0.845 INCHES NOMINAL IN, securing_method: THREADED HOLE(S) BOTH ENDS, outside_diameter: 0.750 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 3010-01-332-1396, 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
ST21900389
NSN: 3010-01-332-1396
FSC: 3010
CAGE: 81395 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. DBA BAE SYSTEMS (USA)
SPECIFICATIONS
bore_shapeSTRAIGHT BOTH ENDS
bore_length0.3450 INCHES NOMINAL BOTH ENDS IN
bore_diameter0.2500 INCHES NOMINAL BOTH ENDS IN
overall_length0.845 INCHES NOMINAL IN
securing_methodTHREADED HOLE(S) BOTH ENDS
outside_diameter0.750 INCHES NOMINAL IN
threaded_hole_quantity4 BOTH ENDS
NSN3010-01-332-1396
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLING,SHAFT,FLEXIBLE TITLE COMPONENT PN ST21900389 MFR COUPLING,SHAFT,FLEXIBL
KEY FEATURES
•
THREADED HOLE QUANTITY: 4 BOTH ENDS
•
BORE LENGTH: 0.3450 INCHES NOMINAL BOTH ENDS IN
•
BORE DIAMETER: 0.2500 INCHES NOMINAL BOTH ENDS IN
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
SECURING METHOD: THREADED HOLE(S) BOTH ENDS
•
BORE SHAPE: STRAIGHT BOTH ENDS
TECHNICAL CHARACTERISTICS (FLIS)
THREADED HOLE QUANTITY4 BOTH ENDS
BORE LENGTH0.3450 INCHES NOMINAL BOTH ENDS IN
BORE DIAMETER0.2500 INCHES NOMINAL BOTH ENDS IN
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
SECURING METHODTHREADED HOLE(S) BOTH ENDS
BORE SHAPESTRAIGHT BOTH ENDS
OVERALL LENGTH0.845 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
A145HInterchangeable
interchangeable cross-reference
interchangeable
145HInterchangeable
interchangeable cross-reference
interchangeable
A1145HInterchangeable
interchangeable cross-reference
interchangeable
SC14Interchangeable
interchangeable cross-reference
interchangeable
SCD173785Interchangeable
interchangeable cross-reference
interchangeable
3-10-C-M-DCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST21900389?
ST21900389 is a COUPLING,SHAFT,FLEXIBLE.
What parts can replace ST21900389?
There are 9 known substitutes for ST21900389: A145H, 145H, A1145H and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST21900389?
ST21900389 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3010-01-332-1396. 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