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1778994 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1778994: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, overall_length: 4.656 INCHES NOMINAL IN, first_end_style: PLAIN, second_end_style: PLAIN, first_end_diameter: 0.3125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-251-3107, 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
1778994
NSN: 3040-00-251-3107
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL
step_quantity1
end_similarityNOT IDENTICAL
overall_length4.656 INCHES NOMINAL IN
first_end_stylePLAIN
second_end_stylePLAIN
first_end_diameter0.3125 INCHES NOMINAL IN
second_end_diameter0.5000 INCHES NOMINAL IN
largest_step_diameter0.500 INCHES NOMINAL IN
material_document_and_classificationQQ-S-624,GR F54140 FED SPEC SINGLE MATERIAL RESPONSE
NSN3040-00-251-3107
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 1778994 MFR SHAFT,SHOULDERED
KEY FEATURES
•
STEP QUANTITY: 1
•
FIRST END DIAMETER: 0.3125 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.5000 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 0.500 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624,GR F54140 FED SPEC SINGLE MATERIAL RESPONSE
•
END SIMILARITY: NOT IDENTICAL
TECHNICAL CHARACTERISTICS
STEP QUANTITY1
FIRST END DIAMETER0.3125 INCHES NOMINAL IN
SECOND END DIAMETER0.5000 INCHES NOMINAL IN
LARGEST STEP DIAMETER0.500 INCHES NOMINAL IN
FIRST END STYLEPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624,GR F54140 FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH4.656 INCHES NOMINAL IN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1778994?
1778994 is a SHAFT,SHOULDERED.
What is the NSN for 1778994?
1778994 is cataloged in the U.S. Government catalog under NSN 3040-00-251-3107. 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.