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Technical Data Sheet
PartsTable / COMPONENT / M83798/1-8
M83798/1-8 ✓ 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 M83798/1-8 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-632-2002, 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
M83798/1-8
NSN: 4730-00-632-2002
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM83798/1-8
NSN4730-00-632-2002
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M83798/1-8 · 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 LONG COUPLING NUT
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.438 INCHES SECOND END IN
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
•
CONNECTION STYLE: GRIPPING NIPPLE (NOSE) SECOND END
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.641 INCHES SECOND END IN
•
MATERIAL: ALUMINUM ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
FURNISHED ITEMS AND QUANTITY1 LONG COUPLING NUT
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.438 INCHES SECOND END IN
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND END
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.641 INCHES SECOND END IN
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING SECOND END
MATERIALALUMINUM ALLOY OVERALL
THREAD CLASS3B FIRST END
NOMINAL THREAD SIZE0.750 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
816-12DInterchangeable
interchangeable cross-reference
interchangeable
676-12DInterchangeable
interchangeable cross-reference
interchangeable
136-1000-20DInterchangeable
interchangeable cross-reference
interchangeable
MIL-F-83798Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798/1Interchangeable
interchangeable cross-reference
interchangeable
136-1000-16DInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M83798/1-8?
M83798/1-8 is a M83798/1-8.
What parts can replace M83798/1-8?
There are 26 known substitutes for M83798/1-8: 816-12D, 676-12D, 136-1000-20D and 23 more. Substitute compatibility should be verified for your specific system.
Is M83798/1-8 still available?
M83798/1-8 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