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7M523 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7M523: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY OVERALL, seat_angle: 8.5 DEGREES FIRST END, thread_class: 3B FIRST END, connection_type: UNTHREADED INTERNAL TUBE SECOND END, connection_style: SWIVEL NUT INVERTED FLARE (TUBE) FIRST END, special_features: NORMAL OPERATING RANGE IS 3000 PSI; HIGHER PSI VERSION AVAILABLE, NSN 4730-00-283-6397(8000 PSI). This part is cataloged in the U.S.

Government catalog under NSN 4730-00-277-1529, 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
7M523
NSN: 4730-00-277-1529
NIINs: 002771529, 002771530, 002792716, 002792717, 002792723, 014726776
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialTITANIUM ALLOY OVERALL
seat_angle8.5 DEGREES FIRST END
thread_class3B FIRST END
connection_typeUNTHREADED INTERNAL TUBE SECOND END
connection_styleSWIVEL NUT INVERTED FLARE (TUBE) FIRST END
special_featuresNORMAL OPERATING RANGE IS 3000 PSI; HIGHER PSI VERSION AVAILABLE, NSN 4730-00-283-6397(8000 PSI)
style_designatorDYNATUBE AND THREADED INTERNAL SWIVEL
nominal_thread_size0.438 INCHES FIRST END IN
nominal_overall_length1.013 INCHES IN
end_item_identificationF-16 AND F-18 AIRCRAFT
thread_quantity_per_inch24 FIRST END
thread_series_designatorUNJS FIRST END
NSN4730-00-277-1529
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7M523 · 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
SUBSTITUTES & CROSS-REFERENCES 9
10108310Reference document
Same NSN cross-reference
Reference document — Informative reference only
GF503BH8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MR54041T08Reference document
Same NSN cross-reference
Reference document — Secondary reference
4730PL1633833Reference document
Same NSN cross-reference
Reference document — Informative reference only
LE273-0030-0002Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AE16825-8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7M523?
7M523 is a COUPLING,TUBE.
What parts can replace 7M523?
There are 9 known substitutes for 7M523: 10108310, GF503BH8, MR54041T08 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7M523?
7M523 is cataloged in the U.S. Government catalog under NSN 4730-00-277-1529. This indicates validated use in U.S. government and defense supply chains.
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