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Technical Data Sheet
PartsTable / COMPONENT / MIL-DTL-83798
MIL-DTL-83798 ✓ 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 ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3B FIRST END, connection_type: THREADED EXTERNAL HOSE GRIPPING SECOND END, connection_style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END, nominal_thread_size: 0.875 INCHES FIRST END IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-087-1016, 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-DTL-83798
NSN: 4730-00-087-1016
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class3B FIRST END
connection_typeTHREADED EXTERNAL HOSE GRIPPING SECOND END
connection_styleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
nominal_thread_size0.875 INCHES FIRST END IN
nominal_overall_length2.440 INCHES IN
end_item_identificationTEST SET, TTU-205
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
material_document_and_classificationQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_inside_diameter_hose_accommodated0.562 INCHES SECOND END IN
nominal_outside_diameter_hose_accommodated0.797 INCHES SECOND END IN
NSN4730-00-087-1016
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-DTL-83798 · 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
•
FURNISHED ITEMS AND QUANTITY: 1 HOSE COUPLING NUT
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID SINGLE RESPONSE
•
SEAT ANGLE: 12.0 DEGREES FIRST END
•
MATERIAL: ALUMINUM ALLOY 2014 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/4,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT (UNJ) FIRST END
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 1.156 INCHES SECOND END IN
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.875 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
FURNISHED ITEMS AND QUANTITY1 HOSE COUPLING NUT
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SINGLE RESPONSE
SEAT ANGLE12.0 DEGREES FIRST END
MATERIALALUMINUM ALLOY 2014 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/4,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT (UNJ) FIRST END
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED1.156 INCHES SECOND END IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.875 INCHES SECOND END IN
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND END
FLOW ANGLE45.0 DEGREES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
M83798/5-12Interchangeable
interchangeable cross-reference
interchangeable
880112-12DInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798/5Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798/6Interchangeable
interchangeable cross-reference
interchangeable
M83798/6-16Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-83798?
MIL-DTL-83798 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace MIL-DTL-83798?
There are 31 known substitutes for MIL-DTL-83798: M83798/5-12, 880112-12D, MIL-DTL-83798/5 and 28 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-83798?
MIL-DTL-83798 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-087-1016. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026