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21J02-28A — COUPLING ASSEMBLY,TUBE,FLEXIBLE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

21J02-28A: COUPLING ASSEMBLY,TUBE,FLEXIBLE.

COUPLING ASSEMBLY,TUBE,FLEXIBLE. Key specifications include material: ALUMINUM ALLOY 2024, overall_length: 0.910 INCHES NOMINAL IN, outside_diameter: 2.160 INCHES NOMINAL IN, special_features: COUPLING DOES NOT COME WITH FLANGE OR SEAL. USES CLAM-SHELL ASSEMPLY P/N 21C02-28A AND SLEEVE P/N 21R02-28A.

A, style_designator: FLEXIBLE COUPLING ASSEMBLY, end_item_identification: F-22 RAPTOR. This part is cataloged in the U.S. Government catalog under NSN 4730-01-488-1127, 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
21J02-28A
NSN: 4730-01-488-1127
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 24984 — HYDRAFLOW (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
overall_length0.910 INCHES NOMINAL IN
outside_diameter2.160 INCHES NOMINAL IN
special_featuresCOUPLING DOES NOT COME WITH FLANGE OR SEAL. USES CLAM-SHELL ASSEMPLY P/N 21C02-28A AND SLEEVE P/N 21R02-28A. A
style_designatorFLEXIBLE COUPLING ASSEMBLY
end_item_identificationF-22 RAPTOR
part_name_assigned_by_controlling_agencyCOUPLING ASSEMBLY
tube_outside_diameter_for_which_designed1.750 INCHES NOMINAL IN
NSN4730-01-488-1127
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21J02-28A · 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLEXIBLE COUPLING ASSEMBLY
•
OUTSIDE DIAMETER: 2.160 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 2024
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.750 INCHES NOMINAL IN
STYLE DESIGNATORFLEXIBLE COUPLING ASSEMBLY
OVERALL LENGTH0.910 INCHES NOMINAL IN
OUTSIDE DIAMETER2.160 INCHES NOMINAL IN
SPECIAL FEATURESCOUPLING DOES NOT COME WITH FLANGE OR SEAL. USES CLAM-SHELL ASSEMPLY P/N 21C02-28A AND SLEEVE P/N 21R02-28A. A
PART NAME ASSIGNED BY CONTROLLING AGENCYCOUPLING ASSEMBLY
END ITEM IDENTIFICATIONF-22 RAPTOR
MATERIALALUMINUM ALLOY 2024
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 21J02-28A?
21J02-28A is a COUPLING ASSEMBLY,TUBE,FLEXIBLE.
What is the NSN for 21J02-28A?
21J02-28A is cataloged in the U.S. Government catalog under NSN 4730-01-488-1127. 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.