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7N2840 ITEM 3 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

7N2840 ITEM 3: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, first_end_style: PLAIN, second_end_style: PLAIN, first_end_diameter: 2.9970 INCHES NOMINAL IN, second_end_diameter: 2.5000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-328-6398, 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
7N2840 ITEM 3
NSN: 3040-01-328-6398
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
step_quantity4
end_similarityNOT IDENTICAL
first_end_stylePLAIN
second_end_stylePLAIN
first_end_diameter2.9970 INCHES NOMINAL IN
second_end_diameter2.5000 INCHES NOMINAL IN
largest_step_diameter5.460 INCHES NOMINAL IN
NSN3040-01-328-6398
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 7N2840 ITEM 3 MFR SHAFT,SHOULDERED
KEY FEATURES
•
STEP QUANTITY: 4
•
FIRST END DIAMETER: 2.9970 INCHES NOMINAL IN
•
SECOND END DIAMETER: 2.5000 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 5.460 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
END SIMILARITY: NOT IDENTICAL
•
SECOND END STYLE: PLAIN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
STEP QUANTITY4
FIRST END DIAMETER2.9970 INCHES NOMINAL IN
SECOND END DIAMETER2.5000 INCHES NOMINAL IN
LARGEST STEP DIAMETER5.460 INCHES NOMINAL IN
FIRST END STYLEPLAIN
END SIMILARITYNOT IDENTICAL
SECOND END STYLEPLAIN
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 1
7N2484Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7N2840 ITEM 3?
7N2840 ITEM 3 is a SHAFT,SHOULDERED.
What parts can replace 7N2840 ITEM 3?
There is 1 known substitute for 7N2840 ITEM 3: 7N2484. Substitute compatibility should be verified for your specific system.
What is the NSN for 7N2840 ITEM 3?
7N2840 ITEM 3 is cataloged in the U.S. Government catalog under NSN 3040-01-328-6398. 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.