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Technical Data Sheet
PartsTable / COMPONENT / MIL-F-18280E
MIL-F-18280E ✓ 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 SLEEVE,CLINCH,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OR STEEL COMP 316 OVERALL, leg_length: 1.130 INCHES MINIMUM AND 1.164 INCHES MAXIMUM THIRD END IN, seat_angle: 12.0 DEGREES FIRST END, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS THIRD END, connection_style: FLARELESS (TUBE) FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-554-7398, 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
MIL-F-18280E
NSN: 4730-00-554-7398
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 304 OR STEEL COMP 316 OVERALL
leg_length1.130 INCHES MINIMUM AND 1.164 INCHES MAXIMUM THIRD END IN
seat_angle12.0 DEGREES FIRST END
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS THIRD END
connection_styleFLARELESS (TUBE) FIRST END
surface_treatmentPASSIVATE OVERALL
operating_pressure1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.438 INCHES THIRD END IN
maximum_operating_temp275.0 FAHRENHEIT SINGLE RESPONSE DEGF
media_for_which_designedHYDRAULIC FLUID FIRST RESPONSE
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
NSN4730-00-554-7398
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-F-18280E · 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
•
SLEEVE OUTSIDE DIAMETER: 0.435 INCHES NOMINAL IN
•
FLANGE WIDTH: 0.060 INCHES NOMINAL IN
•
FLANGE OUTSIDE DIAMETER: 0.484 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 12.0
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.375 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLARELESS
•
MATERIAL: STEEL COMP 12L14
TECHNICAL CHARACTERISTICS (FLIS)
SLEEVE OUTSIDE DIAMETER0.435 INCHES NOMINAL IN
FLANGE WIDTH0.060 INCHES NOMINAL IN
FLANGE OUTSIDE DIAMETER0.484 INCHES NOMINAL IN
SEAT ANGLE IN DEG12.0
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.375 INCHES NOMINAL IN
END ITEM IDENTIFICATIONGRUMMAN AEROSPACE CORP A10 AIRCRAFT
STYLE DESIGNATORFLARELESS
MATERIALSTEEL COMP 12L14
SURFACE TREATMENTCADMIUM
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
LA-361-5Interchangeable
interchangeable cross-reference
interchangeable
1923GInterchangeable
interchangeable cross-reference
interchangeable
424MAS1Interchangeable
interchangeable cross-reference
interchangeable
1562Interchangeable
interchangeable cross-reference
interchangeable
30693Interchangeable
interchangeable cross-reference
interchangeable
AS18280Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-F-18280E?
MIL-F-18280E is a SLEEVE,CLINCH,TUBE FITTING.
What parts can replace MIL-F-18280E?
There are 25 known substitutes for MIL-F-18280E: LA-361-5, 1923G, 424MAS1 and 22 more. Substitute compatibility should be verified for your specific system.
Is MIL-F-18280E still available?
MIL-F-18280E is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026