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LUW265-16 — NUT ASSEMBLY,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

LUW265-16: NUT ASSEMBLY,TUBE COUPLING.

The NUT ASSEMBLY,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, thread_size: 1.312-18, thread_class: 18, overall_length: 0.754 INCHES NOMINAL IN, outside_diameter: 1.615 INCHES NOMINAL IN, style_designator: NUT ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-133-5634, 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
LUW265-16
NSN: 4730-00-133-5634
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 14963 — MIDDLETON ENTERPRISES, INC DIV AERO TUBE & CONNECTOR DIV. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
thread_size1.312-18
thread_class18
overall_length0.754 INCHES NOMINAL IN
outside_diameter1.615 INCHES NOMINAL IN
style_designatorNUT ASSEMBLY
thread_directionRIGHT-HAND
end_item_identificationF4 AIRCRAFT FUEL LINE APPLICATION
screw_thread_series_designatorUNEF
tube_outside_diameter_for_which_designed1.000 INCHES NOMINAL IN
NSN4730-00-133-5634
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: LUW265-16 · 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NUT ASSEMBLY
•
OUTSIDE DIAMETER: 1.615 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SIZE: 1.312-18
•
SCREW THREAD SERIES DESIGNATOR: UNEF
•
THREAD CLASS: 18
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.000 INCHES NOMINAL IN
STYLE DESIGNATORNUT ASSEMBLY
OVERALL LENGTH0.754 INCHES NOMINAL IN
OUTSIDE DIAMETER1.615 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD SIZE1.312-18
SCREW THREAD SERIES DESIGNATORUNEF
THREAD CLASS18
END ITEM IDENTIFICATIONF4 AIRCRAFT FUEL LINE APPLICATION
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 2
HE144-0021-0102Reference document
Same NSN cross-reference
Reference document — Secondary reference
3665-16Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is LUW265-16?
LUW265-16 is a NUT ASSEMBLY,TUBE COUPLING.
What parts can replace LUW265-16?
There are 2 known substitutes for LUW265-16: HE144-0021-0102, 3665-16. Substitute compatibility should be verified for your specific system.
What is the NSN for LUW265-16?
LUW265-16 is cataloged in the U.S. Government catalog under NSN 4730-00-133-5634. 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.