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G551764-1 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

G551764-1: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: COPPER OVERALL, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, style_designator: CLAMP TYPE, nominal_thickness: 1.800 INCHES ALL ENDS IN, bolt_hole_quantity: 2 ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-414-5562, 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
G551764-1
NSN: 4730-01-414-5562
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 3B150 — RAYTHEON COMPANY DBA RAYTHEON CO (USA)
SPECIFICATIONS
materialCOPPER OVERALL
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
style_designatorCLAMP TYPE
nominal_thickness1.800 INCHES ALL ENDS IN
bolt_hole_quantity2 ALL ENDS
flange_face_designPLAIN ALL ENDS
nominal_overall_length4.630 INCHES IN
end_item_identificationMILSTAR SYSTEM
nominal_outside_diameter3.170 INCHES ALL ENDS IN
NSN4730-01-414-5562
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: G551764-1 · 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: ROUND WITH HOLES ALL ENDS
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
NOMINAL OVERALL LENGTH: 4.630 INCHES IN
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: CLAMP TYPE
•
NOMINAL OUTSIDE DIAMETER: 3.170 INCHES ALL ENDS IN
•
BOLT HOLE QUANTITY: 2 ALL ENDS
TECHNICAL CHARACTERISTICS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDS
NOMINAL OVERALL LENGTH4.630 INCHES IN
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORCLAMP TYPE
NOMINAL OUTSIDE DIAMETER3.170 INCHES ALL ENDS IN
BOLT HOLE QUANTITY2 ALL ENDS
END ITEM IDENTIFICATIONMILSTAR SYSTEM
MATERIALCOPPER OVERALL
NOMINAL THICKNESS1.800 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 1
STYLE 606-2-EReference 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 G551764-1?
G551764-1 is a COUPLING,TUBE.
What parts can replace G551764-1?
There is 1 known substitute for G551764-1: STYLE 606-2-E. Substitute compatibility should be verified for your specific system.
What is the NSN for G551764-1?
G551764-1 is cataloged in the U.S. Government catalog under NSN 4730-01-414-5562. 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.