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400-E-AL — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

400-E-AL: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include end_item_identification: U-2 AIRCAFT, part_name_assigned_by_controlling_agency: COUPLING,HOSE. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-649-7388, 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
400-E-AL
NSN: 4730-00-649-7388
NIINs: 006497388, 015788044
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 24869 — DVCC, LLC (USA)
SPECIFICATIONS
end_item_identificationU-2 AIRCAFT
part_name_assigned_by_controlling_agencyCOUPLING,HOSE
NSN4730-00-649-7388
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 400-E-AL · 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: BARBED OR SERRATED END ALL ENDS
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 4.000 INCHES ALL ENDS IN
•
MATING END IDENTIFICATION: O P W CORP,FEMALE ADAPTER PART NO.633DS,4 IN.SIZE IN
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CONNECTION TYPE: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
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STYLE DESIGNATOR: MALE COUPLING HALF
•
QUICK DISCONNECT NOMINAL SIZE: 4.312 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED4.000 INCHES ALL ENDS IN
MATING END IDENTIFICATIONO P W CORP,FEMALE ADAPTER PART NO.633DS,4 IN.SIZE IN
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
CONNECTION TYPEINTERNAL QUICK DISCONNECT ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH7.312 INCHES MINIMUM IN
QUICK DISCONNECT NOMINAL SIZE4.312 INCHES ALL ENDS IN
LEG LENGTH4.250 INCHES MINIMUM IN
FEATURES PROVIDEDSELF-SEALING
SUBSTITUTES & CROSS-REFERENCES 9
633-E-4IN-ALReference document
Same NSN cross-reference
Reference document — Secondary reference
MS27021-17Reference document
Same NSN cross-reference
Reference document — Secondary reference
633E-4ALReference document
Same NSN cross-reference
Reference document — Secondary reference
AA59326II19Reference document
Same NSN cross-reference
Reference document — Secondary reference
4730006497388Reference document
Same NSN cross-reference
Reference document — Secondary reference
44270Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 400-E-AL?
400-E-AL is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 400-E-AL?
There are 9 known substitutes for 400-E-AL: 633-E-4IN-AL, MS27021-17, 633E-4AL and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 400-E-AL?
400-E-AL is cataloged in the U.S. Government catalog under NSN 4730-00-649-7388. 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.