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6511564 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6511564: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, leg_length: 0.560 INCHES NOMINAL IN, thread_class: 2A ALL ENDS A, overall_length: 1.420 INCHES NOMINAL IN, connection_type: THREADED INTERNAL BOSS FIRST FLUID END CONNECTION, connection_style: BOSS GASKET SEAL ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-347-4144, 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
6511564
NSN: 4730-01-347-4144
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL BODY
leg_length0.560 INCHES NOMINAL IN
thread_class2A ALL ENDS A
overall_length1.420 INCHES NOMINAL IN
connection_typeTHREADED INTERNAL BOSS FIRST FLUID END CONNECTION
connection_styleBOSS GASKET SEAL ALL ENDS
special_featuresINCL ACTUATOR VALVE
style_designatorMALE COUPLING HALF
nominal_thread_size0.437 INCHES ALL ENDS IN
quick_disconnect_methodPUSH-PULL ALL ENDS
thread_series_designatorUNF ALL ENDS
NSN4730-01-347-4144
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6511564 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONNECTION STYLE: BOSS GASKET SEAL ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL BOSS FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
LEG LENGTH: 0.560 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.437 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEBOSS GASKET SEAL ALL ENDS
CONNECTION TYPETHREADED INTERNAL BOSS FIRST FLUID END CONNECTION
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH1.420 INCHES NOMINAL IN
LEG LENGTH0.560 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.437 INCHES ALL ENDS IN
SPECIAL FEATURESINCL ACTUATOR VALVE
THREAD CLASS2A ALL ENDS A
MATERIALSTEEL BODY
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
6511564-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 6511564?
6511564 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 6511564?
There is 1 known substitute for 6511564: 6511564-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 6511564?
6511564 is cataloged in the U.S. Government catalog under NSN 4730-01-347-4144. 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.