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1817990 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1817990: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, end_similarity: NOT IDENTICAL, overall_length: 1.344 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES, first_end_style: PLAIN, second_end_style: PLAIN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-032-9712, 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
1817990
NSN: 3040-01-032-9712
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 303
step_quantity3
end_similarityNOT IDENTICAL
overall_length1.344 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES
first_end_stylePLAIN
second_end_stylePLAIN
first_end_diameter0.1874 INCHES MINIMUM AND 0.1879 INCHES MAXIMUM IN
second_end_diameter0.2504 INCHES MINIMUM AND 0.2509 INCHES MAXIMUM IN
largest_step_diameter0.2504 INCHES MINIMUM AND 0.2509 INCHES MAXIMUM IN
NSN3040-01-032-9712
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 1817990 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 63.0 MICROINCHES
•
STEP QUANTITY: 3
•
FIRST END DIAMETER: 0.1874 INCHES MINIMUM AND 0.1879 INCHES MAXIMUM IN
•
SECOND END DIAMETER: 0.2504 INCHES MINIMUM AND 0.2509 INCHES MAXIMUM IN
•
LARGEST STEP DIAMETER: 0.2504 INCHES MINIMUM AND 0.2509 INCHES MAXIMUM IN
•
FIRST END STYLE: PLAIN
•
END SIMILARITY: NOT IDENTICAL
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES
STEP QUANTITY3
FIRST END DIAMETER0.1874 INCHES MINIMUM AND 0.1879 INCHES MAXIMUM IN
SECOND END DIAMETER0.2504 INCHES MINIMUM AND 0.2509 INCHES MAXIMUM IN
LARGEST STEP DIAMETER0.2504 INCHES MINIMUM AND 0.2509 INCHES MAXIMUM IN
FIRST END STYLEPLAIN
OVERALL LENGTH1.344 INCHES NOMINAL IN
END SIMILARITYNOT IDENTICAL
SECOND END STYLEPLAIN
MATERIALSTEEL COMP 303
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 1817990?
1817990 is a SHAFT,SHOULDERED.
What is the NSN for 1817990?
1817990 is cataloged in the U.S. Government catalog under NSN 3040-01-032-9712. 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.