PartsTable
Technical Data Sheet
MILF18280 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The PLUG,TUBE FITTING,THREADED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: TUBE COUPLING, leg_length: 0.938 INCHES MINIMUM AND 0.985 INCHES MAXIMUM ALL ENDS IN, nut_height: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN, seat_angle: 45.00 DEGREES NOMINAL, thread_class: 3B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-053-1068, 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
MILF18280
NSN: 4730-00-053-1068
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleTUBE COUPLING
leg_length0.938 INCHES MINIMUM AND 0.985 INCHES MAXIMUM ALL ENDS IN
nut_height0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
seat_angle45.00 DEGREES NOMINAL
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT (UNJ)
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARELESS (TUBE) ALL ENDS
special_featuresCORROSION RESISTANT STEEL (15-5) WITH CADMIUM PLATING
style_designatorFLARED AND FLARELESS W/ CENTER WRENCHING FACILITY
thread_directionRIGHT-HAND
NSN4730-00-053-1068
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MILF18280 · 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: FLARELESS (TUBE) FIRST END
THREAD CLASS: 2A FIRST END BULKHEAD A
SURFACE TREATMENT: ANODIZE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES SECOND END IN
MATERIAL: ALUMINUM ALLOY OVERALL
NOMINAL THREAD SIZE: 0.750 INCHES FIRST END BULKHEAD IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEFLARELESS (TUBE) FIRST END
THREAD CLASS2A FIRST END BULKHEAD A
SURFACE TREATMENTANODIZE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END IN
MATERIALALUMINUM ALLOY OVERALL
NOMINAL THREAD SIZE0.750 INCHES FIRST END BULKHEAD IN
NOMINAL THREAD SIZE0.438 INCHES SECOND END IN
NOMINAL THREAD SIZE0.438 INCHES THIRD END IN
THREAD SERIES DESIGNATORUNF ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END BULKHEAD IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
ER783D080404Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILF18280?
MILF18280 is a PLUG,TUBE FITTING,THREADED.
What parts can replace MILF18280?
There is 1 known substitute for MILF18280: ER783D080404. Substitute compatibility should be verified for your specific system.
What is the NSN for MILF18280?
MILF18280 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-053-1068. This indicates validated use in U.S. government and defense supply chains.
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