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9D0021 — COIL,RADIO FREQUENCY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

9D0021: COIL,RADIO FREQUENCY.

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 part is cataloged in the U.S.

Government catalog 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
NIINs: 002026639, 011465901, 012650964, 013381160, 013381161, 013381162, 013381163, 013381164, 013381165, 013381166, 013381167, 013389599, 013389600, 013405192, 013405193, 013405194, 013405196, 013412349, 013412350, 013443964, 013443965, 013451077, 013689806, 014540262
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
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
•
FASTENING DEVICE TYPE: THUMB HEAD SCREW
•
STYLE DESIGNATOR: BAND
•
INSIDE DIAMETER: 8.625 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
FASTENING DEVICE TYPETHUMB HEAD SCREW
STYLE DESIGNATORBAND
OVERALL WIDTH0.500 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN
INSIDE DIAMETER8.625 INCHES MINIMUM AND 9.500 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
SUBSTITUTES & CROSS-REFERENCES 7
94144 BReference document
Same NSN cross-reference
Reference document — Secondary reference
94144Reference document
Same NSN cross-reference
Reference document — Secondary reference
2948-304Reference document
Same NSN cross-reference
Reference document — Secondary reference
94144 EN DGSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
WWD304Reference document
Same NSN cross-reference
Reference document — Secondary reference
HK9C21-304Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 9D0021?
9D0021 is a COIL,RADIO FREQUENCY.
What parts can replace 9D0021?
There are 7 known substitutes for 9D0021: 94144 B, 94144, 2948-304 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9D0021?
9D0021 is cataloged in the U.S. Government catalog under NSN 4730-00-202-6639. This indicates validated use in U.S. government and defense supply chains.
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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.