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1856121 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1856121: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, end_similarity: NOT IDENTICAL, overall_length: 0.741 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES, first_end_style: PLAIN, second_end_style: EXTERNAL THREADED. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-070-2603, 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
1856121
NSN: 3040-01-070-2603
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
step_quantity6
end_similarityNOT IDENTICAL
overall_length0.741 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES
first_end_stylePLAIN
second_end_styleEXTERNAL THREADED
special_featuresMAJOR DIA HEXAGON SHAPE
first_end_diameter0.2490 INCHES NOMINAL IN
second_end_diameter0.1640 INCHES NOMINAL IN
largest_step_diameter0.375 INCHES NOMINAL IN
second_end_external_thread_length0.148 INCHES NOMINAL IN
NSN3040-01-070-2603
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 1856121 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 63.0 MICROINCHES
•
SECOND END EXTERNAL THREAD LENGTH: 0.148 INCHES NOMINAL IN
•
STEP QUANTITY: 6
•
FIRST END DIAMETER: 0.2490 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.1640 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 0.375 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES
SECOND END EXTERNAL THREAD LENGTH0.148 INCHES NOMINAL IN
STEP QUANTITY6
FIRST END DIAMETER0.2490 INCHES NOMINAL IN
SECOND END DIAMETER0.1640 INCHES NOMINAL IN
LARGEST STEP DIAMETER0.375 INCHES NOMINAL IN
FIRST END STYLEPLAIN
OVERALL LENGTH0.741 INCHES NOMINAL IN
END SIMILARITYNOT IDENTICAL
SPECIAL FEATURESMAJOR DIA HEXAGON SHAPE
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 1856121?
1856121 is a SHAFT,SHOULDERED.
What is the NSN for 1856121?
1856121 is cataloged in the U.S. Government catalog under NSN 3040-01-070-2603. 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.