PartsTable
Technical Data Sheet
Download PDF

390940 — COUPLING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

390940: COUPLING.

The COUPLING is a the manufacturer industrial component. Key specifications include face_width: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, shaft_type: SHOULDERED, teeth_type: STRAIGHT, pitch_angle: 31.2184 DEGREES, shaft_length: 1.070 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN, gear_material: STEEL COMP E9310. This part is cataloged in the U.S.

Government catalog under NSN 2835-00-349-7655, 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
390940
NSN: 2835-00-349-7655
NIINs: 003497655, 007736744
FSC: 2835 — Gas Turbines and Jet Engines; Non-aircraft Prime Mover, Aircraft Non-prime Mover, and Components
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
face_width0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
shaft_typeSHOULDERED
teeth_typeSTRAIGHT
pitch_angle31.2184 DEGREES
shaft_length1.070 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN
gear_materialSTEEL COMP E9310
overall_length1.591 INCHES MINIMUM AND 1.611 INCHES MAXIMUM IN
pressure_angle20.0000 DEGREES
shaft_end_size0.250 INCHES IN
shaft_end_typeTHREADED EXTERNAL
shaft_materialSTEEL COMP E9310
teeth_quantity20
NSN2835-00-349-7655
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLING TITLE COMPONENT PN 390940 MFR COUPLING
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONGAS TURBINE
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
Ready to buy 390940?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 390940?
390940 is a COUPLING.
What is the NSN for 390940?
390940 is cataloged in the U.S. Government catalog under NSN 2835-00-349-7655. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 390940

✓ 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.