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7543337 — COUPLING ASSEMBLY,SELF-SEALING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7543337: COUPLING ASSEMBLY,SELF-SEALING.

The COUPLING ASSEMBLY,SELF-SEALING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, seat_angle: 37.0 DEGREES, thread_class: 3A FIRST QUICK DISCONNECT END A, connection_type: THREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END, connection_style: FLARED FIRST QUICK DISCONNECT END, first_leg_length: 2.020 INCHES MINIMUM AND 2.360 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-324-8538, 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
7543337
NSN: 4730-01-324-8538
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 05228 — PTI TECHNOLOGIES INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
seat_angle37.0 DEGREES
thread_class3A FIRST QUICK DISCONNECT END A
connection_typeTHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
connection_styleFLARED FIRST QUICK DISCONNECT END
first_leg_length2.020 INCHES MINIMUM AND 2.360 INCHES MAXIMUM IN
style_designatorCOUPLING ASSEMBLY
second_leg_length1.640 INCHES MINIMUM AND 2.110 INCHES MAXIMUM IN
nominal_thread_size1.312 INCHES FIRST QUICK DISCONNECT END IN
mounting_flange_locationFIRST LEG
thread_quantity_per_inch12 FIRST QUICK DISCONNECT END
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) FIRST QUICK DISCONNECT END
NSN4730-01-324-8538
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7543337 · 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
•
SECOND LEG LENGTH: 1.640 INCHES MINIMUM AND 2.110 INCHES MAXIMUM IN
•
CONNECTION STYLE: FLARED FIRST QUICK DISCONNECT END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
•
STYLE DESIGNATOR: COUPLING ASSEMBLY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.000 INCHES FIRST QUICK DISCONNECT END IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MOUNTING FLANGE LOCATION: FIRST LEG
•
NOMINAL THREAD SIZE: 1.312 INCHES FIRST QUICK DISCONNECT END IN
TECHNICAL CHARACTERISTICS
SECOND LEG LENGTH1.640 INCHES MINIMUM AND 2.110 INCHES MAXIMUM IN
CONNECTION STYLEFLARED FIRST QUICK DISCONNECT END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST QUICK DISCONNECT END
STYLE DESIGNATORCOUPLING ASSEMBLY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES FIRST QUICK DISCONNECT END IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MOUNTING FLANGE LOCATIONFIRST LEG
NOMINAL THREAD SIZE1.312 INCHES FIRST QUICK DISCONNECT END IN
SEAT ANGLE37.0 DEGREES
FIRST LEG LENGTH2.020 INCHES MINIMUM AND 2.360 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
114PS414-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
114PS414Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 7543337?
7543337 is a COUPLING ASSEMBLY,SELF-SEALING.
What parts can replace 7543337?
There are 2 known substitutes for 7543337: 114PS414-2, 114PS414. Substitute compatibility should be verified for your specific system.
What is the NSN for 7543337?
7543337 is cataloged in the U.S. Government catalog under NSN 4730-01-324-8538. 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.