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1676685 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1676685: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, overall_length: 8.562 INCHES NOMINAL IN, surface_finish: 8.0 MICROINCHES, first_end_style: PLAIN, second_end_style: SPLINED (STRAIGHT). This part is cataloged in the U.S.

Government catalog under NSN 3040-00-489-8615, 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
1676685
NSN: 3040-00-489-8615
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL
step_quantity7
end_similarityNOT IDENTICAL
overall_length8.562 INCHES NOMINAL IN
surface_finish8.0 MICROINCHES
first_end_stylePLAIN
second_end_styleSPLINED (STRAIGHT)
first_end_diameter0.3123 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
second_end_diameter0.7384 INCHES NOMINAL IN
largest_step_diameter0.812 INCHES NOMINAL IN
second_end_spline_length4.500 INCHES NOMINAL IN
second_end_spline_quantity17
NSN3040-00-489-8615
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 1676685 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 8.0 MICROINCHES
•
STEP QUANTITY: 7
•
FIRST END DIAMETER: 0.3123 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
•
SECOND END DIAMETER: 0.7384 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 0.812 INCHES NOMINAL IN
•
SECOND END SPLINE MINOR DIAMETER: 0.6452 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
SECOND END SPLINE MAJOR DIAMETER: 0.7414 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH8.0 MICROINCHES
STEP QUANTITY7
FIRST END DIAMETER0.3123 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
SECOND END DIAMETER0.7384 INCHES NOMINAL IN
LARGEST STEP DIAMETER0.812 INCHES NOMINAL IN
SECOND END SPLINE MINOR DIAMETER0.6452 INCHES NOMINAL IN
FIRST END STYLEPLAIN
SECOND END SPLINE MAJOR DIAMETER0.7414 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624,GR F54140 FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH8.562 INCHES NOMINAL IN
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: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1676685?
1676685 is a SHAFT,SHOULDERED.
What is the NSN for 1676685?
1676685 is cataloged in the U.S. Government catalog under NSN 3040-00-489-8615. 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.