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Technical Data Sheet
PartsTable / COMPONENT / M83798/6-4
M83798/6-4 ✓ 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 M83798/6-4 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 4730-00-936-2367, 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
M83798/6-4
NSN: 4730-00-936-2367
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM83798/6-4
NSN4730-00-936-2367
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M83798/6-4 · 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
•
SURFACE TREATMENT: CADMIUM OUTSIDE
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.219 INCHES SECOND END IN
•
MATERIAL: STEEL OVERALL
•
OPERATING PRESSURE: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
LEG LENGTH: 1.045 INCHES MINIMUM AND 1.115 INCHES MAXIMUM FIRST END IN
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
•
THREAD CLASS: 3B FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OUTSIDE
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.219 INCHES SECOND END IN
MATERIALSTEEL OVERALL
OPERATING PRESSURE1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
LEG LENGTH1.045 INCHES MINIMUM AND 1.115 INCHES MAXIMUM FIRST END IN
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING SECOND END
THREAD CLASS3B FIRST END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
990-12DInterchangeable
interchangeable cross-reference
interchangeable
MS87023-12Interchangeable
interchangeable cross-reference
interchangeable
136-2090-12DInterchangeable
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 M83798/6-4?
M83798/6-4 is a M83798/6-4.
What parts can replace M83798/6-4?
There are 30 known substitutes for M83798/6-4: 990-12D, MS87023-12, 136-2090-12D and 27 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M83798/6-4?
M83798/6-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-936-2367. 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