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512-6408999-4 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

512-6408999-4: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: IDENTICAL, overall_length: 16.120 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES, first_end_style: SQUARE (ROUND CORNERS), first_end_step_length: 1.380 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-444-2427, 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
512-6408999-4
NSN: 3040-01-444-2427
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
step_quantity3
end_similarityIDENTICAL
overall_length16.120 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES
first_end_styleSQUARE (ROUND CORNERS)
first_end_step_length1.380 INCHES NOMINAL IN
end_item_identificationREMOTE OPERATING GEAR FOR VENTILATION VALVE; W/S SEAWOLF CLASS SSN
first_end_width_across_flats0.559 INCHES NOMINAL IN
NSN3040-01-444-2427
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 512-6408999-4 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 125.0 MICROINCHES
•
FIRST END WIDTH ACROSS FLATS: 0.559 INCHES NOMINAL IN
•
STEP QUANTITY: 3
•
FIRST END STEP LENGTH: 1.380 INCHES NOMINAL IN
•
FIRST END STYLE: SQUARE (ROUND CORNERS)
•
END SIMILARITY: IDENTICAL
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES
FIRST END WIDTH ACROSS FLATS0.559 INCHES NOMINAL IN
STEP QUANTITY3
FIRST END STEP LENGTH1.380 INCHES NOMINAL IN
FIRST END STYLESQUARE (ROUND CORNERS)
OVERALL LENGTH16.120 INCHES NOMINAL IN
END SIMILARITYIDENTICAL
END ITEM IDENTIFICATIONREMOTE OPERATING GEAR FOR VENTILATION VALVE; W/S SEAWOLF CLASS SSN
MATERIALSTEEL
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 1
6408999Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 512-6408999-4?
512-6408999-4 is a SHAFT,SHOULDERED.
What parts can replace 512-6408999-4?
There is 1 known substitute for 512-6408999-4: 6408999. Substitute compatibility should be verified for your specific system.
What is the NSN for 512-6408999-4?
512-6408999-4 is cataloged in the U.S. Government catalog under NSN 3040-01-444-2427. 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.