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3F3878 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

3F3878: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, overall_length: 2.250 INCHES NOMINAL IN, first_end_style: PLAIN, second_end_style: UNTHREADED CROSS DRILLED, special_features: SECOND END INCL LUBE FITTING HOLE AND THD PROVIDSIONS FOR RETAINING PLATE. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-352-7524, 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
3F3878
NSN: 3040-00-352-7524
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
step_quantity2
end_similarityNOT IDENTICAL
overall_length2.250 INCHES NOMINAL IN
first_end_stylePLAIN
second_end_styleUNTHREADED CROSS DRILLED
special_featuresSECOND END INCL LUBE FITTING HOLE AND THD PROVIDSIONS FOR RETAINING PLATE
first_end_diameter2.5000 INCHES NOMINAL IN
second_end_diameter2.2495 INCHES NOMINAL IN
largest_step_diameter2.500 INCHES NOMINAL IN
second_end_hole_depth0.325 INCHES NOMINAL IN
second_end_hole_diameter0.2500 INCHES NOMINAL IN
NSN3040-00-352-7524
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 3F3878 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SECOND END HOLE DIAMETER: 0.2500 INCHES NOMINAL IN
•
STEP QUANTITY: 2
•
FIRST END DIAMETER: 2.5000 INCHES NOMINAL IN
•
SECOND END DIAMETER: 2.2495 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 2.500 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
SECOND END DISTANCE FROM HOLE CENTER TO END: 0.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SECOND END HOLE DIAMETER0.2500 INCHES NOMINAL IN
STEP QUANTITY2
FIRST END DIAMETER2.5000 INCHES NOMINAL IN
SECOND END DIAMETER2.2495 INCHES NOMINAL IN
LARGEST STEP DIAMETER2.500 INCHES NOMINAL IN
FIRST END STYLEPLAIN
OVERALL LENGTH2.250 INCHES NOMINAL IN
SECOND END DISTANCE FROM HOLE CENTER TO END0.875 INCHES NOMINAL IN
SECOND END HOLE DEPTH0.325 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 3F3878?
3F3878 is a SHAFT,SHOULDERED.
What is the NSN for 3F3878?
3F3878 is cataloged in the U.S. Government catalog under NSN 3040-00-352-7524. 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.