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1668573 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1668573: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, end_similarity: NOT IDENTICAL, overall_length: 4.750 INCHES NOMINAL IN, surface_finish: 16.0 MICROINCHES, first_end_style: PLAIN, second_end_style: TWO CIRCULAR GROOVES. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-072-9548, 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
1668573
NSN: 3040-00-072-9548
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
step_quantity6
end_similarityNOT IDENTICAL
overall_length4.750 INCHES NOMINAL IN
surface_finish16.0 MICROINCHES
first_end_stylePLAIN
second_end_styleTWO CIRCULAR GROOVES
first_end_diameter0.3095 INCHES NOMINAL IN
second_end_diameter0.4687 INCHES NOMINAL IN
largest_step_diameter0.8125 INCHES NOMINAL IN
second_end_groove_width0.0310 INCHES NOMINAL IN
second_end_groove_diameter0.4430 INCHES NOMINAL IN
NSN3040-00-072-9548
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 1668573 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 16.0 MICROINCHES
•
STEP QUANTITY: 6
•
FIRST END DIAMETER: 0.3095 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.4687 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 0.8125 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,CLASS 303,COND A FED SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
SURFACE FINISH16.0 MICROINCHES
STEP QUANTITY6
FIRST END DIAMETER0.3095 INCHES NOMINAL IN
SECOND END DIAMETER0.4687 INCHES NOMINAL IN
LARGEST STEP DIAMETER0.8125 INCHES NOMINAL IN
FIRST END STYLEPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CLASS 303,COND A FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH4.750 INCHES NOMINAL IN
SECOND END GROOVE DIAMETER0.4430 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 1
766729Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 1668573?
1668573 is a SHAFT,SHOULDERED.
What parts can replace 1668573?
There is 1 known substitute for 1668573: 766729. Substitute compatibility should be verified for your specific system.
What is the NSN for 1668573?
1668573 is cataloged in the U.S. Government catalog under NSN 3040-00-072-9548. 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.