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J522 — REDUCER,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

J522: REDUCER,TUBE.

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, reducer_type: CONCENTRIC, thread_class: 3A SECOND END A, connection_type: THREADED EXTERNAL TUBE SECOND END, connection_style: FLARED (TUBE) SECOND END, special_features: DRILLED FOR 2 SAFETY WIRE HOLES 0.055 IN. DIA IN.

This part is cataloged in the U.S. Government catalog under NSN 4730-01-125-5512, 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
J522
NSN: 4730-01-125-5512
NIINs: 011255512, 011259756, 011273084, 011791570, 011825787, 012126369, 012134361, 012699538, 013281378
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
reducer_typeCONCENTRIC
thread_class3A SECOND END A
connection_typeTHREADED EXTERNAL TUBE SECOND END
connection_styleFLARED (TUBE) SECOND END
special_featuresDRILLED FOR 2 SAFETY WIRE HOLES 0.055 IN. DIA IN
nominal_thread_size0.500 INCHES SECOND END IN
seat_nominal_radius0.312 INCHES SECOND END IN
nominal_overall_length1.400 INCHES IN
end_item_identificationB1B AIRCRAFT
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
criticality_code_justificationFEAT
NSN4730-01-125-5512
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: J522 · 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 (TUBE) SECOND END
•
SEAT NOMINAL RADIUS: 0.312 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 1.360 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5645 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED (TUBE) SECOND END
CONNECTION STYLEFLARED (TUBE) FIRST END
SEAT NOMINAL RADIUS0.312 INCHES FIRST END IN
SEAT NOMINAL RADIUS0.312 INCHES SECOND END IN
NOMINAL OVERALL LENGTH1.360 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5645 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.312 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END IN
SUBSTITUTES & CROSS-REFERENCES 1
10108603Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is J522?
J522 is a REDUCER,TUBE.
What parts can replace J522?
There is 1 known substitute for J522: 10108603. Substitute compatibility should be verified for your specific system.
What is the NSN for J522?
J522 is cataloged in the U.S. Government catalog under NSN 4730-01-125-5512. This indicates validated use in U.S. government and defense supply chains.
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