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GC550EG4BC — ADAPTER BODY,TUBE-HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

GC550EG4BC: ADAPTER BODY,TUBE-HOSE.

The ADAPTER BODY,TUBE-HOSE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, slot_depth: 0.032 INCHES MINIMUM IN, slot_width: 0.040 INCHES MINIMUM IN, flange_width: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN, overall_length: 0.565 INCHES MAXIMUM IN, special_features: W/FOUR LOCKWIRE HOLES EQUALLY SPACED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-066-0430, 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
GC550EG4BC
NSN: 4730-01-066-0430
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
slot_depth0.032 INCHES MINIMUM IN
slot_width0.040 INCHES MINIMUM IN
flange_width0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
slot_quantity6
overall_length0.565 INCHES MAXIMUM IN
special_featuresW/FOUR LOCKWIRE HOLES EQUALLY SPACED
style_designatorSINGLE FLANGE
flange_inside_diameter0.250 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter0.527 INCHES MAXIMUM IN
sleeve_outside_diameter0.518 INCHES NOMINAL IN
NSN4730-01-066-0430
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: GC550EG4BC · 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
SUBSTITUTES & CROSS-REFERENCES 1
GC550EGReference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GC550EG4BC?
GC550EG4BC is a ADAPTER BODY,TUBE-HOSE.
What parts can replace GC550EG4BC?
There is 1 known substitute for GC550EG4BC: GC550EG. Substitute compatibility should be verified for your specific system.
What is the NSN for GC550EG4BC?
GC550EG4BC is cataloged in the U.S. Government catalog under NSN 4730-01-066-0430. 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.