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025557-1 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

025557-1: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140, end_similarity: NOT IDENTICAL, overall_length: 2.7900 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES, first_end_style: SPLINED (INVOLUTE), second_end_style: CIRCULAR GROOVED AND EXTERNALLY THREADED. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-383-5736, 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
025557-1
NSN: 3040-01-383-5736
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 62228 — MEGGITT DEFENSE SYSTEMS, INC. DBA MEGGITT DEFENSE SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 4140
step_quantity4
end_similarityNOT IDENTICAL
overall_length2.7900 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES
first_end_styleSPLINED (INVOLUTE)
second_end_styleCIRCULAR GROOVED AND EXTERNALLY THREADED
special_featuresTHREADS ARE 1/2-20UNF-2A A
first_end_diameter0.7400 INCHES NOMINAL IN
second_end_diameter0.2500 INCHES NOMINAL IN
largest_step_diameter0.7400 INCHES NOMINAL IN
first_end_spline_length1.7900 INCHES NOMINAL IN
NSN3040-01-383-5736
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 025557-1 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES
•
SECOND END EXTERNAL THREAD LENGTH: 0.6090 INCHES NOMINAL IN
•
FIRST END PITCH DIAMETER: 0.5625 INCHES NOMINAL IN
•
STEP QUANTITY: 4
•
FIRST END DIAMETER: 0.7400 INCHES NOMINAL IN
•
FIRST END SPLINE MAJOR DIAMETER: 0.5902 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.2500 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 0.7400 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES
SECOND END EXTERNAL THREAD LENGTH0.6090 INCHES NOMINAL IN
FIRST END PITCH DIAMETER0.5625 INCHES NOMINAL IN
STEP QUANTITY4
FIRST END DIAMETER0.7400 INCHES NOMINAL IN
FIRST END SPLINE MAJOR DIAMETER0.5902 INCHES NOMINAL IN
SECOND END DIAMETER0.2500 INCHES NOMINAL IN
LARGEST STEP DIAMETER0.7400 INCHES NOMINAL IN
FIRST END STYLESPLINED (INVOLUTE)
OVERALL LENGTH2.7900 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 025557-1?
025557-1 is a SHAFT,SHOULDERED.
What is the NSN for 025557-1?
025557-1 is cataloged in the U.S. Government catalog under NSN 3040-01-383-5736. 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.