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9D0021 ✓ 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 COIL,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, overall_width: 0.562 INCHES NOMINAL IN, inside_diameter: 17.130 INCHES MINIMUM AND 18.000 INCHES MAXIMUM IN, special_features: WITH INNER SHOE, style_designator: WIRE, surface_treatment: PASSIVATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-202-6639, 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
9D0021
NSN: 4730-00-202-6639
FSC: 4730
CAGE: 88277 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_width0.562 INCHES NOMINAL IN
inside_diameter17.130 INCHES MINIMUM AND 18.000 INCHES MAXIMUM IN
special_featuresWITH INNER SHOE
style_designatorWIRE
surface_treatmentPASSIVATE OVERALL
fastening_device_typeSLOTTED HEXAGON HEAD SCREW
end_item_identificationC-17A ACFT A
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-00-202-6639
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 9D0021 · 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
•
INSIDE DIAMETER: 8.625 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
•
FASTENING DEVICE TYPE: THUMB HEAD SCREW
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
STYLE DESIGNATOR: BAND
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER8.625 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
FASTENING DEVICE TYPETHUMB HEAD SCREW
OVERALL WIDTH0.500 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
STYLE DESIGNATORBAND
MATERIALSTEEL CORROSION RESISTING OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
94144Interchangeable
interchangeable cross-reference
interchangeable
65218Interchangeable
interchangeable cross-reference
interchangeable
94144-01Interchangeable
interchangeable cross-reference
interchangeable
94144 BInterchangeable
Same NIIN cross-reference
interchangeable
2948-304Interchangeable
Same NIIN cross-reference
interchangeable
94144 EN DGInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9D0021?
9D0021 is a COIL,RADIO FREQUENCY.
What parts can replace 9D0021?
There are 9 known substitutes for 9D0021: 94144, 65218, 94144-01 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9D0021?
9D0021 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-202-6639. 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