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GC550GL2 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

GC550GL2: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, leg_length: 0.453 INCHES NOMINAL IN, seat_angle: 12.0 DEGREES, thread_class: 3A ALL ENDS A, overall_length: 1.858 INCHES MINIMUM AND 1.888 INCHES MAXIMUM IN, connection_style: FLARELESS ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-080-3090, 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
GC550GL2
NSN: 4730-00-080-3090
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length0.453 INCHES NOMINAL IN
seat_angle12.0 DEGREES
thread_class3A ALL ENDS A
overall_length1.858 INCHES MINIMUM AND 1.888 INCHES MAXIMUM IN
connection_styleFLARELESS ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
surface_treatmentANODIZE BODY
nominal_thread_size0.438 INCHES ALL ENDS IN
end_item_identificationFF-14A ARICRAFT A
quick_disconnect_methodPUSH-PULL ALL ENDS
NSN4730-00-080-3090
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: GC550GL2 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
•
CONNECTION STYLE: FLARELESS ALL ENDS
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6,T351 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
QUICK DISCONNECT NOMINAL SIZE: 0.562 INCHES ALL ENDS IN
•
LEG LENGTH: 0.453 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY
CONNECTION STYLEFLARELESS ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T351 FED SPEC SINGLE MATERIAL RESPONSE BODY
OVERALL LENGTH1.858 INCHES MINIMUM AND 1.888 INCHES MAXIMUM IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
QUICK DISCONNECT NOMINAL SIZE0.562 INCHES ALL ENDS IN
LEG LENGTH0.453 INCHES NOMINAL IN
FEATURES PROVIDEDSELF-SEALING
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
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 5
AE97236EReference document
Same NSN cross-reference
Reference document — Secondary reference
GC550GL1Reference document
Same NSN cross-reference
Reference document — Secondary reference
GC550GL3Reference document
Same NSN cross-reference
Reference document — Secondary reference
AE96046EReference document
Same NSN cross-reference
Reference document — Secondary reference
AE96048GReference document
Same NSN cross-reference
Reference document — Secondary 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 GC550GL2?
GC550GL2 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace GC550GL2?
There are 5 known substitutes for GC550GL2: AE97236E, GC550GL1, GC550GL3 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GC550GL2?
GC550GL2 is cataloged in the U.S. Government catalog under NSN 4730-00-080-3090. 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.