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6B2779 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

6B2779: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, overall_length: 11.438 INCHES NOMINAL IN, first_end_style: PLAIN, second_end_style: SPLINED (STRAIGHT), first_end_diameter: 1.0000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-423-9729, 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
6B2779
NSN: 3040-00-423-9729
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
step_quantity2
end_similarityNOT IDENTICAL
overall_length11.438 INCHES NOMINAL IN
first_end_stylePLAIN
second_end_styleSPLINED (STRAIGHT)
first_end_diameter1.0000 INCHES NOMINAL IN
second_end_diameter1.4380 INCHES NOMINAL IN
largest_step_diameter1.438 INCHES NOMINAL IN
second_end_spline_length10.000 INCHES NOMINAL IN
second_end_spline_quantity6
second_end_spline_major_diameter1.4380 INCHES NOMINAL IN
NSN3040-00-423-9729
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 6B2779 MFR SHAFT,SHOULDERED
KEY FEATURES
•
STEP QUANTITY: 2
•
FIRST END DIAMETER: 1.0000 INCHES NOMINAL IN
•
SECOND END DIAMETER: 1.4380 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 1.438 INCHES NOMINAL IN
•
SECOND END SPLINE MINOR DIAMETER: 1.3120 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
SECOND END SPLINE MAJOR DIAMETER: 1.4380 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STEP QUANTITY2
FIRST END DIAMETER1.0000 INCHES NOMINAL IN
SECOND END DIAMETER1.4380 INCHES NOMINAL IN
LARGEST STEP DIAMETER1.438 INCHES NOMINAL IN
SECOND END SPLINE MINOR DIAMETER1.3120 INCHES NOMINAL IN
FIRST END STYLEPLAIN
SECOND END SPLINE MAJOR DIAMETER1.4380 INCHES NOMINAL IN
OVERALL LENGTH11.438 INCHES NOMINAL IN
END SIMILARITYNOT IDENTICAL
SECOND END SPLINE QUANTITY6
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 1
CM02-58-4720Same 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 6B2779?
6B2779 is a SHAFT,SHOULDERED.
What parts can replace 6B2779?
There is 1 known substitute for 6B2779: CM02-58-4720. Substitute compatibility should be verified for your specific system.
What is the NSN for 6B2779?
6B2779 is cataloged in the U.S. Government catalog under NSN 3040-00-423-9729. 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.