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GC550KJ56F — FERRULE,SWAGE,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

GC550KJ56F: FERRULE,SWAGE,TUBE COUPLING.

The FERRULE,SWAGE,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, flange_width: 0.066 INCHES NOMINAL IN, overall_length: 0.733 INCHES NOMINAL IN, style_designator: SINGLE FLANGE, flange_inside_diameter: 3.472 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-359-2561, 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
GC550KJ56F
NSN: 4730-01-359-2561
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
flange_width0.066 INCHES NOMINAL IN
slot_quantity6
overall_length0.733 INCHES NOMINAL IN
style_designatorSINGLE FLANGE
flange_inside_diameter3.472 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter3.826 INCHES NOMINAL IN
sleeve_outside_diameter3.646 INCHES NOMINAL IN
hose/tube_outside_diameter_for_which_designed3.500 INCHES NOMINAL IN
NSN4730-01-359-2561
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: GC550KJ56F · 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
•
SLOT QUANTITY: 6
•
STYLE DESIGNATOR: SINGLE FLANGE
•
FLANGE INSIDE DIAMETER: 3.472 INCHES NOMINAL IN
•
SLEEVE OUTSIDE DIAMETER: 3.646 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
FLANGE WIDTH: 0.066 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 2024
TECHNICAL CHARACTERISTICS
SLOT QUANTITY6
STYLE DESIGNATORSINGLE FLANGE
FLANGE INSIDE DIAMETER3.472 INCHES NOMINAL IN
OVERALL LENGTH0.733 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER3.646 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
FLANGE WIDTH0.066 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY 2024
FLANGE OUTSIDE DIAMETER3.826 INCHES NOMINAL IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED3.500 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
S3052-56DGReference document
Same NSN cross-reference
Reference document — Secondary reference
GC550KJReference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 GC550KJ56F?
GC550KJ56F is a FERRULE,SWAGE,TUBE COUPLING.
What parts can replace GC550KJ56F?
There are 2 known substitutes for GC550KJ56F: S3052-56DG, GC550KJ. Substitute compatibility should be verified for your specific system.
What is the NSN for GC550KJ56F?
GC550KJ56F is cataloged in the U.S. Government catalog under NSN 4730-01-359-2561. 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.