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R51AF3-0250M0 — FLANGE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

R51AF3-0250M0: FLANGE,PIPE.

The FLANGE,PIPE is a the manufacturer industrial component. Key specifications include special_features: INTEGRAL FILLER; MEDIUM DUTY; INCONEL 625 MATL; MALE; W/POSITIONING FEATURE; LOW PROFILE, flange_section_style: RAISED FACE, WELDING NECK, raised_face_diameter: 0.621 INCHES NOMINAL IN, tube_outside_diameter_for_which_designed: 2.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-476-7356, 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
R51AF3-0250M0
NSN: 4730-01-476-7356
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 15284 — EATON CORPORATION DIV FED (USA)
SPECIFICATIONS
special_featuresINTEGRAL FILLER; MEDIUM DUTY; INCONEL 625 MATL; MALE; W/POSITIONING FEATURE; LOW PROFILE
flange_section_styleRAISED FACE, WELDING NECK
raised_face_diameter0.621 INCHES NOMINAL IN
tube_outside_diameter_for_which_designed2.500 INCHES NOMINAL IN
NSN4730-01-476-7356
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R51AF3-0250M0 · 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.500 INCHES NOMINAL IN
•
FLANGE SECTION STYLE: RAISED FACE, WELDING NECK
•
RAISED FACE DIAMETER: 0.621 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.500 INCHES NOMINAL IN
FLANGE SECTION STYLERAISED FACE, WELDING NECK
RAISED FACE DIAMETER0.621 INCHES NOMINAL IN
SPECIAL FEATURESINTEGRAL FILLER; MEDIUM DUTY; INCONEL 625 MATL; MALE; W/POSITIONING FEATURE; LOW PROFILE
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R51AF3-0250M0?
R51AF3-0250M0 is a FLANGE,PIPE.
What is the NSN for R51AF3-0250M0?
R51AF3-0250M0 is cataloged in the U.S. Government catalog under NSN 4730-01-476-7356. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.