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0631-70-211-4054 — ADAPTER,STRAIGHT,TUBE TO HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

0631-70-211-4054: ADAPTER,STRAIGHT,TUBE TO HOSE.

The ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include special_features: CRITICAL APPLICATION ITEM (CAI); PART OF AIRCRAFT FUEL SYSTEMS, REFUEL/DEFUEL, end_item_identification: CH-53K SIKORSKY HEAVY LIFT HELICOPTER, criticality_code_justification: FEAT, part_name_assigned_by_controlling_agency: REFUEL TUBE; NOMENCLATURE: TUBE ASSEMBLY, REFUEL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-666-9003, 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
0631-70-211-4054
NSN: 4730-01-666-9003
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
special_featuresCRITICAL APPLICATION ITEM (CAI); PART OF AIRCRAFT FUEL SYSTEMS, REFUEL/DEFUEL
end_item_identificationCH-53K SIKORSKY HEAVY LIFT HELICOPTER
criticality_code_justificationFEAT
part_name_assigned_by_controlling_agencyREFUEL TUBE; NOMENCLATURE: TUBE ASSEMBLY, REFUEL
NSN4730-01-666-9003
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 0631-70-211-4054 · 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
•
CRITICALITY CODE JUSTIFICATION: FEAT
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONFEAT
SPECIAL FEATURESCRITICAL APPLICATION ITEM (CAI); PART OF AIRCRAFT FUEL SYSTEMS, REFUEL/DEFUEL
PART NAME ASSIGNED BY CONTROLLING AGENCYREFUEL TUBE; NOMENCLATURE: TUBE ASSEMBLY, REFUEL
END ITEM IDENTIFICATIONCH-53K SIKORSKY HEAVY LIFT HELICOPTER
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 0631-70-211-4054?
0631-70-211-4054 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What is the NSN for 0631-70-211-4054?
0631-70-211-4054 is cataloged in the U.S. Government catalog under NSN 4730-01-666-9003. 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.