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141-4D — COUPLING ASSEMBLY,SELF-SEALING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

141-4D: COUPLING ASSEMBLY,SELF-SEALING.

The COUPLING ASSEMBLY,SELF-SEALING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, seat_angle: 37.0 DEGREES, thread_class: 3A FIRST QUICK DISCONNECT END3A FIRST QUICK DISCONNECT END A, overall_length: 3.247 INCHES NOMINAL3.247 INCHES NOMINAL IN, connection_type: THREADED EXTERNAL TUBE FIRST QUICK DISCONNECT ENDTHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END, connection_style: FLARED FIRST QUICK DISCONNECT ENDFLARED FIRST QUICK DISCONNECT END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-433-2571, 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
141-4D
NSN: 4730-00-433-2571
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
seat_angle37.0 DEGREES
thread_class3A FIRST QUICK DISCONNECT END3A FIRST QUICK DISCONNECT END A
overall_length3.247 INCHES NOMINAL3.247 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT ENDTHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
connection_styleFLARED FIRST QUICK DISCONNECT ENDFLARED FIRST QUICK DISCONNECT END
style_designatorCOUPLING ASSEMBLY
features_providedSELF-SEALINGSELF-SEALING
surface_treatmentANODIZE BODY
operating_pressure1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.438 INCHES FIRST QUICK DISCONNECT END0.438 INCHES FIRST QUICK DISCONNECT END IN
thread_series_designatorUNF FIRST QUICK DISCONNECT END
NSN4730-00-433-2571
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 141-4D · 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: FLARED FIRST QUICK DISCONNECT ENDFLARED FIRST QUICK DISCONNECT END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST QUICK DISCONNECT ENDTHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
•
STYLE DESIGNATOR: COUPLING ASSEMBLY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST QUICK DISCONNECT END IN
•
OPERATING PRESSURE: 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICALIDENTICAL
•
FEATURES PROVIDED: SELF-SEALINGSELF-SEALING
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED FIRST QUICK DISCONNECT ENDFLARED FIRST QUICK DISCONNECT END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT ENDTHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
STYLE DESIGNATORCOUPLING ASSEMBLY
OVERALL LENGTH3.247 INCHES NOMINAL3.247 INCHES NOMINAL IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST QUICK DISCONNECT END IN
OPERATING PRESSURE1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICALIDENTICAL
FEATURES PROVIDEDSELF-SEALINGSELF-SEALING
NOMINAL THREAD SIZE0.438 INCHES FIRST QUICK DISCONNECT END0.438 INCHES FIRST QUICK DISCONNECT END IN
SEAT ANGLE37.0 DEGREES
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 141-4D?
141-4D is a COUPLING ASSEMBLY,SELF-SEALING.
What is the NSN for 141-4D?
141-4D is cataloged in the U.S. Government catalog under NSN 4730-00-433-2571. 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.