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2657040 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2657040: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, step_quantity: 18, end_similarity: NOT IDENTICAL, overall_length: 8.100 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES, first_end_style: PLAIN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-139-6846, 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
2657040
NSN: 3040-01-139-6846
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 06848 — HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR) (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
step_quantity18
end_similarityNOT IDENTICAL
overall_length8.100 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES
first_end_stylePLAIN
second_end_styleSPLINED (INVOLUTE)
first_end_diameter0.1850 INCHES NOMINAL IN
second_end_diameter0.1875 INCHES NOMINAL IN
fsc_application_dataFUEL SYSTEM,AIRCRAFT ENGINE
largest_step_diameter0.550 INCHES NOMINAL IN
second_end_spline_length0.580 INCHES NOMINAL IN
NSN3040-01-139-6846
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 2657040 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES
•
FSC APPLICATION DATA: FUEL SYSTEM,AIRCRAFT ENGINE
•
STEP QUANTITY: 18
•
FIRST END DIAMETER: 0.1850 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.1875 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 0.550 INCHES NOMINAL IN
•
SECOND END SPLINE MINOR DIAMETER: 0.1740 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES
FSC APPLICATION DATAFUEL SYSTEM,AIRCRAFT ENGINE
STEP QUANTITY18
FIRST END DIAMETER0.1850 INCHES NOMINAL IN
SECOND END DIAMETER0.1875 INCHES NOMINAL IN
LARGEST STEP DIAMETER0.550 INCHES NOMINAL IN
SECOND END SPLINE MINOR DIAMETER0.1740 INCHES NOMINAL IN
FIRST END STYLEPLAIN
SECOND END SPLINE MAJOR DIAMETER0.1875 INCHES NOMINAL IN
OVERALL LENGTH8.100 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
10159286Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 2657040?
2657040 is a SHAFT,SHOULDERED.
What parts can replace 2657040?
There is 1 known substitute for 2657040: 10159286. Substitute compatibility should be verified for your specific system.
What is the NSN for 2657040?
2657040 is cataloged in the U.S. Government catalog under NSN 3040-01-139-6846. 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.