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221669-1 — ADAPTER,STRAIGHT,FLANGE TO PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

221669-1: ADAPTER,STRAIGHT,FLANGE TO PIPE.

ADAPTER,STRAIGHT,FLANGE TO PIPE. Key specifications include surface_treatment: ANODIZE OVERALL, nominal_overall_length: 2.350 INCHES IN, end_item_identification: 4930-01-517-7009 FUEL SYSTEM, SUPPLY POINT, part_name_assigned_by_controlling_agency: ADAPTER, 3/4 IN NPT TO 60427 NOZZLE FLANGE IN, surface_treatment_document_and_classification: MIL-A-8625 TYPE II, CLASS 2 COLOR TAN 33446 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-542-9669, 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
221669-1
NSN: 4730-01-542-9669
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0DT23 — EATON CORPORATION DBA EATON INOAC (USA)
SPECIFICATIONS
surface_treatmentANODIZE OVERALL
nominal_overall_length2.350 INCHES IN
end_item_identification4930-01-517-7009 FUEL SYSTEM, SUPPLY POINT
part_name_assigned_by_controlling_agencyADAPTER, 3/4 IN NPT TO 60427 NOZZLE FLANGE IN
surface_treatment_document_and_classificationMIL-A-8625 TYPE II, CLASS 2 COLOR TAN 33446 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-01-542-9669
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 221669-1 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 TYPE II, CLASS 2 COLOR TAN 33446 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NOMINAL OVERALL LENGTH: 2.350 INCHES IN
•
SURFACE TREATMENT: ANODIZE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 TYPE II, CLASS 2 COLOR TAN 33446 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NOMINAL OVERALL LENGTH2.350 INCHES IN
SURFACE TREATMENTANODIZE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER, 3/4 IN NPT TO 60427 NOZZLE FLANGE IN
END ITEM IDENTIFICATION4930-01-517-7009 FUEL SYSTEM, SUPPLY POINT
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)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 221669-1?
221669-1 is a ADAPTER,STRAIGHT,FLANGE TO PIPE.
What is the NSN for 221669-1?
221669-1 is cataloged in the U.S. Government catalog under NSN 4730-01-542-9669. 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.