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AE81574G — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AE81574G: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, leg_length: 1.360 INCHES NOMINAL IN, seat_angle: 37.0 DEGREES, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION, connection_style: INVERTED FLARE ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-197-4841, 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
AE81574G
NSN: 4730-01-197-4841
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
leg_length1.360 INCHES NOMINAL IN
seat_angle37.0 DEGREES
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
connection_styleINVERTED FLARE ALL ENDS
style_designatorMALE COUPLING HALF
nominal_thread_size0.562 INCHES ALL ENDS IN
quick_disconnect_methodQUICK LEAD THREAD ALL ENDS
thread_series_designatorUNF ALL ENDS
quick_disconnect_nominal_size0.375 INCHES ALL ENDS IN
nominal_outside_diameter_tube_accommodated0.375 INCHES ALL ENDS IN
NSN4730-01-197-4841
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AE81574G · 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: INVERTED FLARE ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES ALL ENDS IN
•
QUICK DISCONNECT NOMINAL SIZE: 0.375 INCHES ALL ENDS IN
•
LEG LENGTH: 1.360 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.562 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEINVERTED FLARE ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
CONNECTION TYPEINTERNAL QUICK DISCONNECT ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES ALL ENDS IN
QUICK DISCONNECT NOMINAL SIZE0.375 INCHES ALL ENDS IN
LEG LENGTH1.360 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.562 INCHES ALL ENDS IN
SEAT ANGLE37.0 DEGREES
THREAD CLASS2A ALL ENDS A
SUBSTITUTES & CROSS-REFERENCES 2
7M639Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
7M639S6Same 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 AE81574G?
AE81574G is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace AE81574G?
There are 2 known substitutes for AE81574G: 7M639, 7M639S6. Substitute compatibility should be verified for your specific system.
What is the NSN for AE81574G?
AE81574G is cataloged in the U.S. Government catalog under NSN 4730-01-197-4841. 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.