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310626 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

310626: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include leg_length: 0.330 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN, thread_class: 3A ALL ENDS A, overall_length: 1.050 INCHES MINIMUM AND 1.080 INCHES MAXIMUM IN, connection_type: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION, connection_style: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS, style_designator: MALE COUPLING HALF. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-251-8569, 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
310626
NSN: 4730-00-251-8569
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 33654 — HOWDEN FLUID SYSTEMS (USA)
SPECIFICATIONS
leg_length0.330 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
thread_class3A ALL ENDS A
overall_length1.050 INCHES MINIMUM AND 1.080 INCHES MAXIMUM IN
connection_typeTHREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
connection_styleEXTERNAL SEAT FOR GASKET SEAL ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
nominal_thread_size0.438 INCHES ALL ENDS IN
quick_disconnect_methodPUSH-PULL ALL ENDS
thread_series_designatorUNF ALL ENDS
mating_end_identificationWESTINGHOUSE ELECTRIC CORP COUPLING HALF,QUICK DISCONNECT,PART NO. 577R714H01
NSN4730-00-251-8569
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 310626 · 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: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS
•
MATING END IDENTIFICATION: WESTINGHOUSE ELECTRIC CORP COUPLING HALF,QUICK DISCONNECT,PART NO. 577R714H01
•
CONNECTION TYPE: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
LEG LENGTH: 0.330 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
•
FEATURES PROVIDED: SELF-SEALING
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL ALL ENDS
MATING END IDENTIFICATIONWESTINGHOUSE ELECTRIC CORP COUPLING HALF,QUICK DISCONNECT,PART NO. 577R714H01
CONNECTION TYPETHREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
CONNECTION TYPEEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH1.050 INCHES MINIMUM AND 1.080 INCHES MAXIMUM IN
LEG LENGTH0.330 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
FEATURES PROVIDEDSELF-SEALING
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
THREAD CLASS3A ALL ENDS A
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
577R714H02Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 310626?
310626 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 310626?
There is 1 known substitute for 310626: 577R714H02. Substitute compatibility should be verified for your specific system.
What is the NSN for 310626?
310626 is cataloged in the U.S. Government catalog under NSN 4730-00-251-8569. 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.