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L51021T06 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

L51021T06: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY BODY, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, surface_treatment: LUBRICANT DRY FILM BODY, operating_pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, nominal_thread_size: 0.5625 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-705-7550, 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
L51021T06
NSN: 4730-01-705-7550
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
materialTITANIUM ALLOY BODY
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
surface_treatmentLUBRICANT DRY FILM BODY
operating_pressure5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.5625 INCHES FIRST END IN
nominal_overall_length1.289 INCHES IN
end_item_identificationSPECIAL, AIR VEHICLE, AIRCRAFT
nominal_outside_diameter0.609 INCHES SECOND END IN
thread_quantity_per_inch20 FIRST END
thread_series_designatorUNJS FIRST END
material_document_and_classificationAMS 4928 NATIONAL STD SINGLE MATERIAL RESPONSE BODY
NSN4730-01-705-7550
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: L51021T06 · 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
•
NOMINAL OVERALL LENGTH: 1.289 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4928 NATIONAL STD SINGLE MATERIAL RESPONSE BODY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES SECOND END IN
•
OPERATING PRESSURE: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 0.5625 INCHES FIRST END IN
•
NOMINAL OUTSIDE DIAMETER: 0.609 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
NOMINAL OVERALL LENGTH1.289 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPEUNTHREADED INTERNAL TUBE SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4928 NATIONAL STD SINGLE MATERIAL RESPONSE BODY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES SECOND END IN
OPERATING PRESSURE5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.5625 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER0.609 INCHES SECOND END IN
SURFACE TREATMENTLUBRICANT DRY FILM BODY
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER, STRAIGHT, TUBE - AXIAL SWAGE TO MALE BEAM SEAL
SUBSTITUTES & CROSS-REFERENCES 1
7NG0081Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is L51021T06?
L51021T06 is a COUPLING,TUBE.
What parts can replace L51021T06?
There is 1 known substitute for L51021T06: 7NG0081. Substitute compatibility should be verified for your specific system.
What is the NSN for L51021T06?
L51021T06 is cataloged in the U.S. Government catalog under NSN 4730-01-705-7550. 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.