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PartsTable / COMPONENT / R31AB3-0250FO
R31AB3-0250FO ✓ 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 FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061, style_designator: ROUND, NO BOLT HOLES, flange_section_style: RAISED FACE SOCKET NECK (BULK HEAD), end_item_identification: SPECIAL, AIR VEHICLE, AIRCRAFT, tube_outside_diameter_for_which_designed: 2.50 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-711-2083, 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
R31AB3-0250FO
NSN: 4730-01-711-2083
FSC: 4730
CAGE: 15284 — EATON CORPORATION DIV FED (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
style_designatorROUND, NO BOLT HOLES
flange_section_styleRAISED FACE SOCKET NECK (BULK HEAD)
end_item_identificationSPECIAL, AIR VEHICLE, AIRCRAFT
tube_outside_diameter_for_which_designed2.50 INCHES NOMINAL IN
NSN4730-01-711-2083
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R31AB3-0250FO · 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
•
STYLE DESIGNATOR: ROUND, NO BOLT HOLES
•
FLANGE SECTION STYLE: RAISED FACE SOCKET NECK (BULK HEAD)
•
MATERIAL: ALUMINUM ALLOY 6061
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.50 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORROUND, NO BOLT HOLES
FLANGE SECTION STYLERAISED FACE SOCKET NECK (BULK HEAD)
MATERIALALUMINUM ALLOY 6061
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.50 INCHES NOMINAL IN
END ITEM IDENTIFICATIONSPECIAL, AIR VEHICLE, AIRCRAFT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
7766Interchangeable
interchangeable cross-reference
interchangeable
1537766Interchangeable
interchangeable cross-reference
interchangeable
211603Interchangeable
interchangeable cross-reference
interchangeable
12708AInterchangeable
interchangeable cross-reference
interchangeable
0211603Interchangeable
interchangeable cross-reference
interchangeable
1539716Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R31AB3-0250FO?
R31AB3-0250FO is a FLANGE,PIPE.
What parts can replace R31AB3-0250FO?
There are 12 known substitutes for R31AB3-0250FO: 7766, 1537766, 211603 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R31AB3-0250FO?
R31AB3-0250FO is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-711-2083. 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