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Technical Data Sheet
PartsTable / COMPONENT / M83798/2-3
M83798/2-3 ✓ 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 M83798/2-3 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-891-1948, 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
M83798/2-3
NSN: 4730-00-891-1948
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM83798/2-3
NSN4730-00-891-1948
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M83798/2-3 · 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
•
MAXIMUM OPERATING TEMP: 121.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
CONNECTION STYLE: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.377 INCHES SECOND END IN
•
OPERATING PRESSURE: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5050 OR 5053 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
FLOW ANGLE: 45.0 DEGREES
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP121.0 FAHRENHEIT SINGLE RESPONSE DEGF
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.377 INCHES SECOND END IN
OPERATING PRESSURE1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5050 OR 5053 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FLOW ANGLE45.0 DEGREES
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.156 INCHES SECOND END IN
SEAT ANGLE37.0 DEGREES FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
136-1045-6DInterchangeable
interchangeable cross-reference
interchangeable
M83798/2-6Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798Interchangeable
interchangeable cross-reference
interchangeable
M83798/2-5Interchangeable
interchangeable cross-reference
interchangeable
MS87019-5Interchangeable
interchangeable cross-reference
interchangeable
4310005808548Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M83798/2-3?
M83798/2-3 is a M83798/2-3.
What parts can replace M83798/2-3?
There are 27 known substitutes for M83798/2-3: 136-1045-6D, M83798/2-6, MIL-DTL-83798 and 24 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M83798/2-3?
M83798/2-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-891-1948. 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