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GB15C3 — ADAPTER,STRAIGHT,FLANGE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

GB15C3: ADAPTER,STRAIGHT,FLANGE TO BOSS.

ADAPTER,STRAIGHT,FLANGE TO BOSS. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, leg_length: 0.296 INCHES NOMINAL ALL ENDS IN, flange_shape: OCTAGON WITH HOLES FIRST END, thread_class: 3B SECOND END, connection_style: GASKET SEAL (BOSS) SECOND END, nominal_thickness: 0.125 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-006-9939, 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
GB15C3
NSN: 4730-00-006-9939
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
leg_length0.296 INCHES NOMINAL ALL ENDS IN
flange_shapeOCTAGON WITH HOLES FIRST END
thread_class3B SECOND END
connection_styleGASKET SEAL (BOSS) SECOND END
nominal_thickness0.125 INCHES FIRST END IN
surface_treatmentANODIZE OVERALL
bolt_hole_quantity4 FIRST END
flange_face_designPLAIN FIRST END
nominal_thread_size0.750 INCHES SECOND END IN
nominal_overall_length0.593 INCHES IN
thread_series_designatorUNF SECOND END
NSN4730-00-006-9939
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: GB15C3 · 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
•
FLANGE SHAPE: OCTAGON WITH HOLES FIRST END
•
NOMINAL WIDTH ACROSS FLATS: 1.937 INCHES FIRST END IN
•
FLANGE FACE DESIGN: PLAIN FIRST END
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: GASKET SEAL (BOSS) SECOND END
•
BOLT CIRCLE NOMINAL DIAMETER: 1.437 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 0.593 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
FLANGE SHAPEOCTAGON WITH HOLES FIRST END
NOMINAL WIDTH ACROSS FLATS1.937 INCHES FIRST END IN
FLANGE FACE DESIGNPLAIN FIRST END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEGASKET SEAL (BOSS) SECOND END
BOLT CIRCLE NOMINAL DIAMETER1.437 INCHES FIRST END IN
NOMINAL OVERALL LENGTH0.593 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
BOLT HOLE NOMINAL DIAMETER0.130 INCHES FIRST END IN
LEG LENGTH0.296 INCHES NOMINAL 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

No substitute or cross-reference records for this part.

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 GB15C3?
GB15C3 is a ADAPTER,STRAIGHT,FLANGE TO BOSS.
What is the NSN for GB15C3?
GB15C3 is cataloged in the U.S. Government catalog under NSN 4730-00-006-9939. This indicates validated use in U.S. government and defense supply chains.
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