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4031916 — FERRULE,COMPRESSION,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4031916: FERRULE,COMPRESSION,TUBE FITTING.

FERRULE,COMPRESSION,TUBE FITTING. Key specifications include material: NICKEL ALLOY, overall_length: 0.675 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN, style_designator: INVERTED FLARE, casehardening_indicator: NOT CASEHARDENED, end_item_identification: ENGINE AIRCRAFT F100-PW-229 F15E, F16C/D., flange_outside_diameter: 0.489 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-451-5975, 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
4031916
NSN: 4730-01-451-5975
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_length0.675 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN
style_designatorINVERTED FLARE
casehardening_indicatorNOT CASEHARDENED
end_item_identificationENGINE AIRCRAFT F100-PW-229 F15E, F16C/D.
flange_outside_diameter0.489 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN
sleeve_outside_diameter0.690 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN
hose/tube_outside_diameter_for_which_designed0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
NSN4730-01-451-5975
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4031916 · 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: INVERTED FLARE
•
SLEEVE OUTSIDE DIAMETER: 0.690 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: NICKEL ALLOY
•
FLANGE OUTSIDE DIAMETER: 0.489 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORINVERTED FLARE
OVERALL LENGTH0.675 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN
SLEEVE OUTSIDE DIAMETER0.690 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
END ITEM IDENTIFICATIONENGINE AIRCRAFT F100-PW-229 F15E, F16C/D.
MATERIALNICKEL ALLOY
FLANGE OUTSIDE DIAMETER0.489 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
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
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 4031916?
4031916 is a FERRULE,COMPRESSION,TUBE FITTING.
What is the NSN for 4031916?
4031916 is cataloged in the U.S. Government catalog under NSN 4730-01-451-5975. 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.