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21C1538-042 — COUPLING,SHAFT,FLEXIBLE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

21C1538-042: COUPLING,SHAFT,FLEXIBLE.

The COUPLING,SHAFT,FLEXIBLE is a the manufacturer industrial component. Key specifications include bore_shape: STRAIGHT BOTH ENDS, bore_length: 0.2500 INCHES NOMINAL BOTH ENDS IN, design_type: NONINSULATOR SPRING ACTION, bore_diameter: 0.2500 INCHES NOMINAL BOTH ENDS IN, overall_length: 0.750 INCHES NOMINAL IN, securing_method: THREADED HOLE(S) BOTH ENDS. This part is cataloged in the U.S.

Government catalog under NSN 3010-00-999-0480, 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
21C1538-042
NSN: 3010-00-999-0480
FSC: 3010 — Torque Converters and Speed Changers
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
bore_shapeSTRAIGHT BOTH ENDS
bore_length0.2500 INCHES NOMINAL BOTH ENDS IN
design_typeNONINSULATOR SPRING ACTION
bore_diameter0.2500 INCHES NOMINAL BOTH ENDS IN
overall_length0.750 INCHES NOMINAL IN
securing_methodTHREADED HOLE(S) BOTH ENDS
outside_diameter0.500 INCHES NOMINAL IN
thread_size_designator0.112-40 BOTH ENDS
threaded_hole_locationBOTH ENDS: 0.094 IN. FROM HUB END 90 DEG APART IN
threaded_hole_quantity2 BOTH ENDS
furnished_items_and_quantitySETSCREW 4
NSN3010-00-999-0480
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLING,SHAFT,FLEXIBLE TITLE COMPONENT PN 21C1538-042 MFR COUPLING,SHAFT,FLEXIBL
KEY FEATURES
•
SECURING METHOD: THREADED HOLE(S) BOTH ENDS
•
THREADED HOLE LOCATION: BOTH ENDS: 0.094 IN. FROM HUB END 90 DEG APART IN
•
BORE LENGTH: 0.2500 INCHES NOMINAL BOTH ENDS IN
•
DESIGN TYPE: NONINSULATOR SPRING ACTION
•
OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
BORE SHAPE: STRAIGHT BOTH ENDS
•
THREADED HOLE QUANTITY: 2 BOTH ENDS
TECHNICAL CHARACTERISTICS
SECURING METHODTHREADED HOLE(S) BOTH ENDS
THREADED HOLE LOCATIONBOTH ENDS: 0.094 IN. FROM HUB END 90 DEG APART IN
BORE LENGTH0.2500 INCHES NOMINAL BOTH ENDS IN
DESIGN TYPENONINSULATOR SPRING ACTION
OVERALL LENGTH0.750 INCHES NOMINAL IN
OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
BORE SHAPESTRAIGHT BOTH ENDS
THREADED HOLE QUANTITY2 BOTH ENDS
THREAD SIZE DESIGNATOR0.112-40 BOTH ENDS
BORE DIAMETER0.2500 INCHES NOMINAL BOTH ENDS IN
SUBSTITUTES & CROSS-REFERENCES 2
8062-88Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
21C1520-015Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21C1538-042?
21C1538-042 is a COUPLING,SHAFT,FLEXIBLE.
What parts can replace 21C1538-042?
There are 2 known substitutes for 21C1538-042: 8062-88, 21C1520-015. Substitute compatibility should be verified for your specific system.
What is the NSN for 21C1538-042?
21C1538-042 is cataloged in the U.S. Government catalog under NSN 3010-00-999-0480. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.