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MIL-DTL-83798/7 — Technical Data Sheet

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— · 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

CONNECTOR,SWIVEL FLANGE TO HOSE. Key specifications include material: ALUMINUM ALLOY 2014 FLANGE, flange_shape: RECTANGULAR WITH HOLES FIRST END, nominal_width: 2.188 INCHES FIRST END IN, nominal_length: 2.188 INCHES FIRST END IN, connection_type: FLANGE FIRST END, connection_style: GRIPPING (HOSE) SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-891-0971, 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-83798/7
NSN: 4730-00-891-0971
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY 2014 FLANGE
flange_shapeRECTANGULAR WITH HOLES FIRST END
nominal_width2.188 INCHES FIRST END IN
nominal_length2.188 INCHES FIRST END IN
connection_typeFLANGE FIRST END
connection_styleGRIPPING (HOSE) SECOND END
nominal_thickness0.234 INCHES FIRST END IN
surface_treatmentANODIZE OVERALL
bolt_hole_quantity4 FIRST END
flange_face_designPLAIN SWIVEL FIRST END
operating_pressure500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp300.0 FAHRENHEIT SINGLE RESPONSE DEGF
NSN4730-00-891-0971
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-DTL-83798/7 · 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
•
UNABLE TO DECODE: UNABLE TO DECODE
•
NOMINAL WIDTH: 2.375 INCHES FIRST END IN
•
CENTER TO CENTER NOMINAL DISTANCE BETWEEN BOLT HOLES ALONG WIDTH: 1.812 INCHES FIRST END IN
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 1.375 INCHES SECOND END IN
•
FURNISHED ITEMS AND QUANTITY: 1 HOSE COUPLING NUT
•
CENTER TO CENTER NOMINAL DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 1.812 INCHES FIRST END IN
•
OPERATING PRESSURE: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS (FLIS)
UNABLE TO DECODEUNABLE TO DECODE
NOMINAL WIDTH2.375 INCHES FIRST END IN
CENTER TO CENTER NOMINAL DISTANCE BETWEEN BOLT HOLES ALONG WIDTH1.812 INCHES FIRST END IN
SPECIAL FEATURESGRUMMAN AEROSPACE CORP A10 AIRCRAFT
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED1.375 INCHES SECOND END IN
FURNISHED ITEMS AND QUANTITY1 HOSE COUPLING NUT
CENTER TO CENTER NOMINAL DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.812 INCHES FIRST END IN
OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
RAISED FACE NOMINAL DIAMETER2.125 INCHES FIRST END IN
SURFACE TREATMENTANODIZE OUTSIDE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
MIL-DTL-83798CInterchangeable
interchangeable cross-reference
interchangeable
816-24DInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-83798/1Interchangeable
interchangeable cross-reference
interchangeable
680-5Interchangeable
interchangeable cross-reference
interchangeable
M83798/3-5Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-83798Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-83798/7?
MIL-DTL-83798/7 is a CONNECTOR,SWIVEL FLANGE TO HOSE.
What parts can replace MIL-DTL-83798/7?
There are 23 known substitutes for MIL-DTL-83798/7: MIL-DTL-83798C, 816-24D, MIL-DTL-83798/1 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-83798/7?
MIL-DTL-83798/7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-891-0971. 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: September 2026