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Technical Data Sheet
PartsTable / COMPONENT / MIL-DTL-83798/3
MIL-DTL-83798/3 ✓ 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 MIL-DTL-83798/3 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 4730-00-580-6453, 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-83798/3
NSN: 4730-00-580-6453
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-DTL-83798/3
NSN4730-00-580-6453
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-DTL-83798/3 · 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
•
SEAT ANGLE: 37.0 DEGREES FIRST END
•
SURFACE TREATMENT: ANODIZE OVERALL
•
FURNISHED ITEMS AND QUANTITY: 1 HOSE SOCKET
•
FLOW ANGLE: 90.0 DEGREES
•
NOMINAL THREAD SIZE: 1.312 INCHES FIRST END IN
•
LEG LENGTH: 2.970 INCHES NOMINAL SECOND END IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT (UNJ) FIRST END
•
THREAD QUANTITY PER INCH: 12 FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE37.0 DEGREES FIRST END
SURFACE TREATMENTANODIZE OVERALL
FURNISHED ITEMS AND QUANTITY1 HOSE SOCKET
FLOW ANGLE90.0 DEGREES
NOMINAL THREAD SIZE1.312 INCHES FIRST END IN
LEG LENGTH2.970 INCHES NOMINAL SECOND END IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT (UNJ) FIRST END
THREAD QUANTITY PER INCH12 FIRST END
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE DEGF
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
136-2045-16DInterchangeable
interchangeable cross-reference
interchangeable
25636-16-16DInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798Interchangeable
interchangeable cross-reference
interchangeable
68016Interchangeable
interchangeable cross-reference
interchangeable
P23Y21Interchangeable
interchangeable cross-reference
interchangeable
57032Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-83798/3?
MIL-DTL-83798/3 is a MIL-DTL-83798/3.
What parts can replace MIL-DTL-83798/3?
There are 30 known substitutes for MIL-DTL-83798/3: 136-2045-16D, 25636-16-16D, MIL-DTL-83798 and 27 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-83798/3?
MIL-DTL-83798/3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-580-6453. 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