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AE98521G — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AE98521G: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, leg_length: 0.391 INCHES NOMINAL IN, thread_class: 3A ALL ENDS A, overall_length: 1.471 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END, connection_style: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-191-5139, 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
AE98521G
NSN: 4730-01-191-5139
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
materialALUMINUM ALLOY BODY
leg_length0.391 INCHES NOMINAL IN
thread_class3A ALL ENDS A
overall_length1.471 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
connection_styleEXTERNAL SEAT FOR GASKET SEAL ALL ENDS
style_designatorMALE COUPLING HALF
surface_treatmentANODIZE BODY
nominal_thread_size0.562 INCHES ALL ENDS IN
quick_disconnect_methodPUSH-PULL ALL ENDS
thread_series_designatorUNF ALL ENDS
mating_end_identificationEATON CORP AIL DIV COUPLING HALF,QUICK DISCONNECT,PART NO. 412022-5
NSN4730-01-191-5139
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AE98521G · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-7413 MIL SPEC SINGLE TREATMENT RESPONSE BODY
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS
•
MATING END IDENTIFICATION: EATON CORP AIL DIV COUPLING HALF,QUICK DISCONNECT,PART NO. 412022-5
•
CONNECTION TYPE: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6 T351AL FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8 T651 FED SPEC SINGLE MATERIAL RESPONSE BODY
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-7413 MIL SPEC SINGLE TREATMENT RESPONSE BODY
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL ALL ENDS
MATING END IDENTIFICATIONEATON CORP AIL DIV COUPLING HALF,QUICK DISCONNECT,PART NO. 412022-5
CONNECTION TYPETHREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
CONNECTION TYPEEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
STYLE DESIGNATORMALE COUPLING HALF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 T351AL FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8 T651 FED SPEC SINGLE MATERIAL RESPONSE BODY
OVERALL LENGTH1.471 INCHES NOMINAL IN
LEG LENGTH0.391 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.562 INCHES ALL ENDS IN
SUBSTITUTES & CROSS-REFERENCES 2
412021-8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
412021Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AE98521G?
AE98521G is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace AE98521G?
There are 2 known substitutes for AE98521G: 412021-8, 412021. Substitute compatibility should be verified for your specific system.
What is the NSN for AE98521G?
AE98521G is cataloged in the U.S. Government catalog under NSN 4730-01-191-5139. 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.