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181A284 — SHAFT,STRAIGHT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

181A284: SHAFT,STRAIGHT.

The SHAFT,STRAIGHT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, end_similarity: NOT IDENTICAL, overall_length: 8.460 INCHES NOMINAL IN, first_end_style: CIRCULAR GROOVED, second_end_style: SPLINED (INVOLUTE), special_features: 3 HOLES 0.136 IN DIA,0.250 IN DEEP IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-400-5980, 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
181A284
NSN: 3040-01-400-5980
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 03640 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 303
end_similarityNOT IDENTICAL
overall_length8.460 INCHES NOMINAL IN
first_end_styleCIRCULAR GROOVED
second_end_styleSPLINED (INVOLUTE)
special_features3 HOLES 0.136 IN DIA,0.250 IN DEEP IN
first_end_diameter0.3120 INCHES NOMINAL IN
second_end_diameter0.2190 INCHES NOMINAL IN
first_end_groove_width0.0300 INCHES NOMINAL IN
second_end_spline_length0.3000 INCHES NOMINAL IN
first_end_groove_diameter0.2900 INCHES NOMINAL IN
second_end_pitch_diameter0.2375 INCHES NOMINAL IN
NSN3040-01-400-5980
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,STRAIGHT TITLE COMPONENT PN 181A284 MFR SHAFT,STRAIGHT
KEY FEATURES
•
FIRST END DIAMETER: 0.3120 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.2190 INCHES NOMINAL IN
•
SECOND END SPLINE MINOR DIAMETER: 0.2193 INCHES MINIMUM IN
•
FIRST END STYLE: CIRCULAR GROOVED
•
SECOND END SPLINE MAJOR DIAMETER: 0.2480 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
•
END SIMILARITY: NOT IDENTICAL
•
FIRST END DISTANCE FROM END TO GROOVE: 0.1570 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FIRST END DIAMETER0.3120 INCHES NOMINAL IN
SECOND END DIAMETER0.2190 INCHES NOMINAL IN
SECOND END SPLINE MINOR DIAMETER0.2193 INCHES MINIMUM IN
FIRST END STYLECIRCULAR GROOVED
SECOND END SPLINE MAJOR DIAMETER0.2480 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
OVERALL LENGTH8.460 INCHES NOMINAL IN
END SIMILARITYNOT IDENTICAL
FIRST END DISTANCE FROM END TO GROOVE0.1570 INCHES NOMINAL IN
SECOND END SPLINE QUANTITY19
SECOND END PRESSURE ANGLE45.0 DEGREES NOMINAL
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 181A284?
181A284 is a SHAFT,STRAIGHT.
What is the NSN for 181A284?
181A284 is cataloged in the U.S. Government catalog under NSN 3040-01-400-5980. 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.