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Technical Data Sheet
PartsTable / COMPONENT / MIL-F-83798-5A
MIL-F-83798-5A ✓ 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 HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: ALUMINUM OVERALL, flow_angle: 45.0 DEGREES, leg_length: 0.450 INCHES NOMINAL FIRST END IN, seat_angle: 12.0 DEGREES FIRST END, thread_class: 3B FIRST END, connection_type: THREADED EXTERNAL HOSE GRIPPING SECOND END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-533-2850, 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-83798-5A
NSN: 4730-00-533-2850
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM OVERALL
flow_angle45.0 DEGREES
leg_length0.450 INCHES NOMINAL FIRST END IN
seat_angle12.0 DEGREES FIRST END
thread_class3B FIRST END
connection_typeTHREADED EXTERNAL HOSE GRIPPING SECOND END
connection_styleSWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END
nominal_thread_size0.438 INCHES FIRST END IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
specification/standard_data96906-MS87022 GOVERNMENT STANDARD
nominal_inside_diameter_hose_accommodated0.250 INCHES SECOND END IN
nominal_outside_diameter_hose_accommodated0.438 INCHES SECOND END IN
NSN4730-00-533-2850
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-F-83798-5A · 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 THREAD SIZE: 1.625 INCHES FIRST END IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 1.125 INCHES SECOND END IN
•
CONNECTION TYPE: THREADED EXTERNAL HOSE GRIPPING SECOND END
•
MATERIAL: ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 6061 OVERALL
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 1.437 INCHES SECOND END IN
•
OPERATING PRESSURE: 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE1.625 INCHES FIRST END IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED1.125 INCHES SECOND END IN
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING SECOND END
MATERIALALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 6061 OVERALL
END ITEM IDENTIFICATIONAIRCRAFT APPLICATION
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED1.437 INCHES SECOND END IN
OPERATING PRESSURE6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SEAT ANGLE12.0 DEGREES FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.250 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
M83798/5-12Interchangeable
interchangeable cross-reference
interchangeable
880112-12DInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798/5Interchangeable
interchangeable cross-reference
interchangeable
136-2045-16DInterchangeable
interchangeable cross-reference
interchangeable
25636-16-16DInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-F-83798-5A?
MIL-F-83798-5A is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace MIL-F-83798-5A?
There are 19 known substitutes for MIL-F-83798-5A: M83798/5-12, 880112-12D, MIL-DTL-83798/5 and 16 more. Substitute compatibility should be verified for your specific system.
Is MIL-F-83798-5A still available?
MIL-F-83798-5A 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