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1550291 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1550291: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, overall_length: 12.281 INCHES NOMINAL IN, first_end_style: SPLINED (INVOLUTE), second_end_style: SPLINED (INVOLUTE), first_end_diameter: 0.669 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-594-7489, 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
1550291
NSN: 3040-01-594-7489
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL
step_quantity4
end_similarityNOT IDENTICAL
overall_length12.281 INCHES NOMINAL IN
first_end_styleSPLINED (INVOLUTE)
second_end_styleSPLINED (INVOLUTE)
first_end_diameter0.669 INCHES NOMINAL IN
second_end_diameter1.365 INCHES NOMINAL IN
largest_step_diameter1.906 INCHES NOMINAL IN
first_end_spline_length0.750 INCHES NOMINAL IN
first_end_pitch_diameter0.708 INCHES NOMINAL IN
first_end_pressure_angle1.291 RADIANS NOMINAL
NSN3040-01-594-7489
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 1550291 MFR SHAFT,SHOULDERED
KEY FEATURES
•
FIRST END PITCH DIAMETER: 0.708 INCHES NOMINAL IN
•
STEP QUANTITY: 4
•
FIRST END DIAMETER: 0.669 INCHES NOMINAL IN
•
FIRST END SPLINE MAJOR DIAMETER: 1.365 INCHES NOMINAL IN
•
SECOND END DIAMETER: 1.365 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 1.906 INCHES NOMINAL IN
•
SECOND END SPLINE MINOR DIAMETER: 1.233 INCHES NOMINAL IN
•
FIRST END STYLE: SPLINED (INVOLUTE)
TECHNICAL CHARACTERISTICS
FIRST END PITCH DIAMETER0.708 INCHES NOMINAL IN
STEP QUANTITY4
FIRST END DIAMETER0.669 INCHES NOMINAL IN
FIRST END SPLINE MAJOR DIAMETER1.365 INCHES NOMINAL IN
SECOND END DIAMETER1.365 INCHES NOMINAL IN
LARGEST STEP DIAMETER1.906 INCHES NOMINAL IN
SECOND END SPLINE MINOR DIAMETER1.233 INCHES NOMINAL IN
FIRST END STYLESPLINED (INVOLUTE)
SECOND END SPLINE MAJOR DIAMETER1.365 INCHES NOMINAL IN
OVERALL LENGTH12.281 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1550291?
1550291 is a SHAFT,SHOULDERED.
What is the NSN for 1550291?
1550291 is cataloged in the U.S. Government catalog under NSN 3040-01-594-7489. 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.