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645A889-2 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

645A889-2: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, overall_length: 14.312 INCHES NOMINAL IN, first_end_style: PLAIN, second_end_style: EXTERNAL THREADED, first_end_diameter: 9.5000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-972-8879, 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
645A889-2
NSN: 3040-00-972-8879
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL
step_quantity2
end_similarityNOT IDENTICAL
overall_length14.312 INCHES NOMINAL IN
first_end_stylePLAIN
second_end_styleEXTERNAL THREADED
first_end_diameter9.5000 INCHES NOMINAL IN
second_end_diameter0.4980 INCHES NOMINAL IN
largest_step_diameter0.745 INCHES NOMINAL IN
second_end_external_thread_length0.812 INCHES NOMINAL IN
NSN3040-00-972-8879
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 645A889-2 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SECOND END EXTERNAL THREAD LENGTH: 0.812 INCHES NOMINAL IN
•
STEP QUANTITY: 2
•
FIRST END DIAMETER: 9.5000 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.4980 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 0.745 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
END SIMILARITY: NOT IDENTICAL
TECHNICAL CHARACTERISTICS
SECOND END EXTERNAL THREAD LENGTH0.812 INCHES NOMINAL IN
STEP QUANTITY2
FIRST END DIAMETER9.5000 INCHES NOMINAL IN
SECOND END DIAMETER0.4980 INCHES NOMINAL IN
LARGEST STEP DIAMETER0.745 INCHES NOMINAL IN
FIRST END STYLEPLAIN
OVERALL LENGTH14.312 INCHES NOMINAL IN
END SIMILARITYNOT IDENTICAL
SECOND END STYLEEXTERNAL THREADED
MATERIALSTEEL
OTHER ITEMS IN FSC 3040 — Miscellaneous Power Transmission Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3040-00-001-0046 3040-00-001-0047 3040-00-001-0048 3040-00-001-0068 3040-00-001-0077 3040-00-001-0078 3040-00-001-0089 3040-00-001-1224
SUBSTITUTES & CROSS-REFERENCES 2
645A889PC2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
645A889Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 645A889-2?
645A889-2 is a SHAFT,SHOULDERED.
What parts can replace 645A889-2?
There are 2 known substitutes for 645A889-2: 645A889PC2, 645A889. Substitute compatibility should be verified for your specific system.
What is the NSN for 645A889-2?
645A889-2 is cataloged in the U.S. Government catalog under NSN 3040-00-972-8879. 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.