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643740 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

643740: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, end_similarity: NOT IDENTICAL, overall_length: 2.594 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES, first_end_style: PLAIN, second_end_style: CIRCULAR GROOVED AND SLOTTED. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-122-7746, 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
643740
NSN: 3040-01-122-7746
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 58022 — R F PRODUCTS, INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
step_quantity4
end_similarityNOT IDENTICAL
overall_length2.594 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES
first_end_stylePLAIN
second_end_styleCIRCULAR GROOVED AND SLOTTED
first_end_diameter0.1248 INCHES NOMINAL IN
second_end_diameter0.1248 INCHES NOMINAL IN
largest_step_diameter0.187 INCHES NOMINAL IN
second_end_slot_depth0.031 INCHES NOMINAL IN
second_end_slot_width0.031 INCHES NOMINAL IN
NSN3040-01-122-7746
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 643740 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES
•
STEP QUANTITY: 4
•
FIRST END DIAMETER: 0.1248 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.1248 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 0.187 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
SECOND END GROOVE DIAMETER: 0.0950 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES
STEP QUANTITY4
FIRST END DIAMETER0.1248 INCHES NOMINAL IN
SECOND END DIAMETER0.1248 INCHES NOMINAL IN
LARGEST STEP DIAMETER0.187 INCHES NOMINAL IN
FIRST END STYLEPLAIN
OVERALL LENGTH2.594 INCHES NOMINAL IN
SECOND END GROOVE DIAMETER0.0950 INCHES NOMINAL IN
SECOND END SLOT DEPTH0.031 INCHES NOMINAL IN
END SIMILARITYNOT IDENTICAL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 643740?
643740 is a SHAFT,SHOULDERED.
What is the NSN for 643740?
643740 is cataloged in the U.S. Government catalog under NSN 3040-01-122-7746. 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.