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Technical Data Sheet
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B5644 ✓ 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 SHAFT,DRIVE,FLEXIBLE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, end_item_identification: VALVE CHK SWING;P J VALVES INC;MOD 2CSA. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-01-346-4755, 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
B5644
NSN: 3040-01-346-4755
FSC: 3040
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
end_item_identificationVALVE CHK SWING;P J VALVES INC;MOD 2CSA
NSN3040-01-346-4755
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,DRIVE,FLEXIBLE TITLE COMPONENT PN B5644 MFR SHAFT,DRIVE,FLEXIBLE
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONTWIN DISC MARINE TRANSMISSION MODEL MG506
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
B5644Interchangeable
interchangeable cross-reference
interchangeable
D5640 ITEM 3Interchangeable
interchangeable cross-reference
interchangeable
D5640Interchangeable
interchangeable cross-reference
interchangeable
B5644-XA7493Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B5644?
B5644 is a SHAFT,DRIVE,FLEXIBLE.
What parts can replace B5644?
There are 4 known substitutes for B5644: B5644, D5640 ITEM 3, D5640 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B5644?
B5644 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-01-346-4755. 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