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PartsTable / COMPONENT / MIL-DTL-83798/2-4
MIL-DTL-83798/2-4 ✓ 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 MIL-DTL-83798/2-4 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-709-3887, 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-83798/2-4
NSN: 4730-00-709-3887
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-DTL-83798/2-4
NSN4730-00-709-3887
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-DTL-83798/2-4 · 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
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.438 INCHES SECOND END IN
•
FLOW ANGLE: 45.0 DEGREES
•
MATERIAL: STEEL OVERALL
•
SEAT ANGLE: 37.0 DEGREES FIRST END
•
SURFACE TREATMENT: CADMIUM OVERALL
•
THREAD SERIES DESIGNATOR: UNF FIRST END
•
LEG LENGTH: 0.375 INCHES NOMINAL FIRST END IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.438 INCHES SECOND END IN
FLOW ANGLE45.0 DEGREES
MATERIALSTEEL OVERALL
SEAT ANGLE37.0 DEGREES FIRST END
SURFACE TREATMENTCADMIUM OVERALL
THREAD SERIES DESIGNATORUNF FIRST END
LEG LENGTH0.375 INCHES NOMINAL FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.219 INCHES SECOND END IN
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
RPBX11-6784Interchangeable
interchangeable cross-reference
interchangeable
11-6784Interchangeable
interchangeable cross-reference
interchangeable
ATBX-6784Interchangeable
interchangeable cross-reference
interchangeable
6784Interchangeable
interchangeable cross-reference
interchangeable
MIL-E-1/1465Interchangeable
interchangeable cross-reference
interchangeable
DS-935753Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-83798/2-4?
MIL-DTL-83798/2-4 is a MIL-DTL-83798/2-4.
What parts can replace MIL-DTL-83798/2-4?
There are 31 known substitutes for MIL-DTL-83798/2-4: RPBX11-6784, 11-6784, ATBX-6784 and 28 more. Substitute compatibility should be verified for your specific system.
Is MIL-DTL-83798/2-4 still available?
MIL-DTL-83798/2-4 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