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3905446 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3905446: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, leg_length: 0.562 INCHES NOMINAL IN, seat_angle: 37.0 DEGREES, thread_class: 2A ALL ENDS A, overall_length: 2.283 INCHES NOMINAL IN, connection_type: INTERNAL QUICK DISCONNECT ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-828-6937, 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
3905446
NSN: 4730-00-828-6937
NIINs: 008286937, 012910274
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_length0.562 INCHES NOMINAL IN
seat_angle37.0 DEGREES
thread_class2A ALL ENDS A
overall_length2.283 INCHES NOMINAL IN
connection_typeINTERNAL QUICK DISCONNECT ALL ENDS
connection_styleFLARED ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
surface_treatmentANODIZE BODY
nominal_thread_size0.562 INCHES ALL ENDS IN
quick_disconnect_methodSPRING PUSH-LOCK ALL ENDS
NSN4730-00-828-6937
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3905446 · 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-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
•
CONNECTION STYLE: FLARED ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
CONNECTION STYLEFLARED ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
CONNECTION TYPEINTERNAL QUICK DISCONNECT ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
OVERALL LENGTH2.283 INCHES NOMINAL IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES ALL ENDS IN
QUICK DISCONNECT NOMINAL SIZE0.750 INCHES ALL ENDS IN
LEG LENGTH0.562 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 4
54.0027.718.27Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
675012P2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7490A01H03Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1692030P2Same 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 3905446?
3905446 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 3905446?
There are 4 known substitutes for 3905446: 54.0027.718.27, 675012P2, 7490A01H03 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3905446?
3905446 is cataloged in the U.S. Government catalog under NSN 4730-00-828-6937. 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.