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431640 — COUPLING,SHAFT,FLEXIBLE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

431640: COUPLING,SHAFT,FLEXIBLE.

The COUPLING,SHAFT,FLEXIBLE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1035 OVERALL, head_style: OVAL COUNTERSUNK, shank_style: STRAIGHT, shank_diameter: 0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN, fastener_length: 2.550 INCHES MINIMUM AND 2.560 INCHES MAXIMUM IN, countersink_angle: 60.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 3010-00-089-0554, 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
431640
NSN: 3010-00-089-0554
FSC: 3010 — Torque Converters and Speed Changers
CAGE: 14170 — HUGHES MISSILE SYSTEMS CO SAN DIEGO (USA)
SPECIFICATIONS
materialSTEEL COMP 1035 OVERALL
head_styleOVAL COUNTERSUNK
shank_styleSTRAIGHT
shank_diameter0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
fastener_length2.550 INCHES MINIMUM AND 2.560 INCHES MAXIMUM IN
countersink_angle60.0 DEGREES NOMINAL
surface_treatmentPHOSPHATE OVERALL
head_major_diameter0.303 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3010-00-089-0554
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLING,SHAFT,FLEXIBLE TITLE COMPONENT PN 431640 MFR COUPLING,SHAFT,FLEXIBL
SUBSTITUTES & CROSS-REFERENCES 1
10106126Same 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 431640?
431640 is a COUPLING,SHAFT,FLEXIBLE.
What parts can replace 431640?
There is 1 known substitute for 431640: 10106126. Substitute compatibility should be verified for your specific system.
What is the NSN for 431640?
431640 is cataloged in the U.S. Government catalog under NSN 3010-00-089-0554. 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.