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A77509 — COUPLING,SHAFT,FLEXIBLE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A77509: COUPLING,SHAFT,FLEXIBLE.

The COUPLING,SHAFT,FLEXIBLE is a the manufacturer industrial component. Key specifications include material: STEEL, securing_device_type: THREADED FASTENER, peripheral_shape_style: DIAMOND, ROUNDED CORNERS, TWO HOLES, end_item_identification: 4210-01-137-9944 TRUCK,FIRE,CRASH, mounting_opening_shape_style: UNTHREADED HOLE. This part is cataloged in the U.S.

Government catalog under NSN 3010-00-841-5298, 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
A77509
NSN: 3010-00-841-5298
NIINs: 008415298, 012115130
FSC: 3010 — Torque Converters and Speed Changers
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialSTEEL
securing_device_typeTHREADED FASTENER
peripheral_shape_styleDIAMOND, ROUNDED CORNERS, TWO HOLES
end_item_identification4210-01-137-9944 TRUCK,FIRE,CRASH
mounting_opening_shape_styleUNTHREADED HOLE
NSN3010-00-841-5298
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLING,SHAFT,FLEXIBLE TITLE COMPONENT PN A77509 MFR COUPLING,SHAFT,FLEXIBL
KEY FEATURES
•
KEYWAY DEPTH: 0.2810 INCHES NOMINAL FIRST END IN
•
FSC APPLICATION DATA: 1. TURBINE GENERATOR
•
BORE LENGTH: 4.5310 INCHES NOMINAL BOTH ENDS IN
•
DESIGN TYPE: GRID SPRING
•
TAPER MINOR DIAMETER: 3.1000 INCHES NOMINAL FIRST END IN
•
KEYING FACILITY TYPE: KEYWAY BOTH ENDS
TECHNICAL CHARACTERISTICS
KEYWAY DEPTH0.2810 INCHES NOMINAL FIRST END IN
KEYWAY DEPTH0.2850 INCHES NOMINAL SECOND END IN
FSC APPLICATION DATA1. TURBINE GENERATOR
BORE LENGTH4.5310 INCHES NOMINAL BOTH ENDS IN
DESIGN TYPEGRID SPRING
TAPER MINOR DIAMETER3.1000 INCHES NOMINAL FIRST END IN
TAPER MINOR DIAMETER3.1010 INCHES NOMINAL SECOND END IN
KEYING FACILITY TYPEKEYWAY BOTH ENDS
OVERALL LENGTH9.3125 INCHES NOMINAL IN
OUTSIDE DIAMETER15.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
429320Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A77509?
A77509 is a COUPLING,SHAFT,FLEXIBLE.
What parts can replace A77509?
There is 1 known substitute for A77509: 429320. Substitute compatibility should be verified for your specific system.
What is the NSN for A77509?
A77509 is cataloged in the U.S. Government catalog under NSN 3010-00-841-5298. 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.