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2478W298 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2478W298: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, end_similarity: NOT IDENTICAL, overall_length: 1.345 INCHES NOMINAL IN, first_end_style: PLAIN, second_end_style: FLATTED, first_end_diameter: 0.2550 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-374-8541, 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
2478W298
NSN: 3040-01-374-8541
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 0GD25 — ALLIED DEFENSE INDUSTRIES, LLC DBA AMS DISTRIBUTION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
step_quantity2
end_similarityNOT IDENTICAL
overall_length1.345 INCHES NOMINAL IN
first_end_stylePLAIN
second_end_styleFLATTED
first_end_diameter0.2550 INCHES NOMINAL IN
second_end_diameter0.3739 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
largest_step_diameter0.374 INCHES NOMINAL IN
second_end_flat_depth0.0210 INCHES NOMINAL IN
second_end_flat_length1.1500 INCHES NOMINAL IN
material_document_and_classificationQQ-A-225/4(T6) FED SPEC SINGLE MATERIAL RESPONSE
NSN3040-01-374-8541
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 2478W298 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SECOND END FLAT LENGTH: 1.1500 INCHES NOMINAL IN
•
STEP QUANTITY: 2
•
FIRST END DIAMETER: 0.2550 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.3739 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
•
LARGEST STEP DIAMETER: 0.374 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/4(T6) FED SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
SECOND END FLAT LENGTH1.1500 INCHES NOMINAL IN
STEP QUANTITY2
FIRST END DIAMETER0.2550 INCHES NOMINAL IN
SECOND END DIAMETER0.3739 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
LARGEST STEP DIAMETER0.374 INCHES NOMINAL IN
FIRST END STYLEPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/4(T6) FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH1.345 INCHES NOMINAL IN
END SIMILARITYNOT IDENTICAL
SECOND END STYLEFLATTED
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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2478W298?
2478W298 is a SHAFT,SHOULDERED.
What is the NSN for 2478W298?
2478W298 is cataloged in the U.S. Government catalog under NSN 3040-01-374-8541. 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.