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Technical Data Sheet
PartsTable / COMPONENT / 6519-3
6519-3 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, body_style: COAXIAL TYPE, leg_length: 0.986 INCHES NOMINAL IN, seat_angle: 37.0 DEGREES, construction: ONE-PIECE, thread_class: 3A ALL ENDS A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-00-531-8423, 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
6519-3
NSN: 5365-00-531-8423
FSC: 5365
CAGE: 93742 — DRS NAVAL POWER SYSTEMS INC DBA DRS POWER & CONTROL TECHNOLOGIES INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
body_styleCOAXIAL TYPE
leg_length0.986 INCHES NOMINAL IN
seat_angle37.0 DEGREES
constructionONE-PIECE
thread_class3A ALL ENDS A
hole_diameter0.344 INCHES NOMINAL IN
overall_width5.000 INCHES NOMINAL IN
overall_height5.000 INCHES NOMINAL IN
overall_length2.686 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT ALL ENDS
furnished_itemsSEAL
NSN5365-00-531-8423
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLING HALF,QUICK DISCONNECT TITLE COMPONENT PN 6519-3 MFR COUPLING HALF,QUICK DI
KEY FEATURES
•
CONSTRUCTION: ONE-PIECE
•
HARDNESS RATING: 90.0 ROCKWELL B NOMINAL
•
MATERIAL: STEEL CORROSION RESISTING
•
BOLT CIRCLE DIAMETER: 3.375 INCHES NOMINAL IN
•
FSC APPLICATION DATA: DIESEL ENGINE
•
STYLE DESIGNATOR: NON-CIRCULAR W/APERTURE
•
OUTSIDE CORNER RADIUS: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CONSTRUCTIONONE-PIECE
HARDNESS RATING90.0 ROCKWELL B NOMINAL
MATERIALSTEEL CORROSION RESISTING
BOLT CIRCLE DIAMETER3.375 INCHES NOMINAL IN
FSC APPLICATION DATADIESEL ENGINE
STYLE DESIGNATORNON-CIRCULAR W/APERTURE
OUTSIDE CORNER RADIUS0.375 INCHES NOMINAL IN
OVERALL WIDTH4.000 INCHES NOMINAL IN
APERTURE DIAMETER2.469 INCHES NOMINAL IN
HOLE DIAMETER0.344 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
40307Interchangeable
interchangeable cross-reference
interchangeable
02261-0280-18Interchangeable
interchangeable cross-reference
interchangeable
4500-271Interchangeable
interchangeable cross-reference
interchangeable
68B618000-271Interchangeable
interchangeable cross-reference
interchangeable
C3660-1Interchangeable
interchangeable cross-reference
interchangeable
651-93Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6519-3?
6519-3 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 6519-3?
There are 16 known substitutes for 6519-3: 40307, 02261-0280-18, 4500-271 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6519-3?
6519-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-00-531-8423. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026