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GC550NA — FERRULE,SWAGE,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

GC550NA: FERRULE,SWAGE,TUBE COUPLING.

The FERRULE,SWAGE,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630, flange_width: 0.060 INCHES NOMINAL IN, overall_length: 1.390 INCHES NOMINAL IN, outside_diameter: 2.781 INCHES NOMINAL IN, style_designator: SINGLE FLANGE, flange_inside_diameter: 2.011 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-299-5820, 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
GC550NA
NSN: 4730-01-299-5820
NIINs: 012995820, 013295122, 013395301
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 630
flange_width0.060 INCHES NOMINAL IN
slot_quantity4
overall_length1.390 INCHES NOMINAL IN
outside_diameter2.781 INCHES NOMINAL IN
style_designatorSINGLE FLANGE
flange_inside_diameter2.011 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter2.313 INCHES NOMINAL IN
sleeve_outside_diameter2.145 INCHES NOMINAL IN
tube_outside_diameter_for_which_designed2.000 INCHES NOMINAL IN
hose/tube_outside_diameter_for_which_designed2.000 INCHES NOMINAL IN
NSN4730-01-299-5820
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: GC550NA · 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: 2.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLEXIBLE COUPLING ASSEMBLY
•
OUTSIDE DIAMETER: 2.781 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.000 INCHES NOMINAL IN
STYLE DESIGNATORFLEXIBLE COUPLING ASSEMBLY
OVERALL LENGTH2.726 INCHES NOMINAL IN
OUTSIDE DIAMETER2.781 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY
SUBSTITUTES & CROSS-REFERENCES 1
GC550NA32DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 GC550NA?
GC550NA is a FERRULE,SWAGE,TUBE COUPLING.
What parts can replace GC550NA?
There is 1 known substitute for GC550NA: GC550NA32D. Substitute compatibility should be verified for your specific system.
What is the NSN for GC550NA?
GC550NA is cataloged in the U.S. Government catalog under NSN 4730-01-299-5820. 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.