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655-7726 — CONNECTION,SOUND ISOLATION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

655-7726: CONNECTION,SOUND ISOLATION.

The CONNECTION,SOUND ISOLATION is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, overall_length: 0.750 INCHES NOMINAL IN, inside_diameter: 1.000 INCHES NOMINAL IN, nominal_thread_size: 1.312 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-956-7719, 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
655-7726
NSN: 4730-00-956-7719
NIINs: 009567719, 013932184
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_length0.750 INCHES NOMINAL IN
inside_diameter1.000 INCHES NOMINAL IN
nominal_thread_size1.312 INCHES IN
NSN4730-00-956-7719
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 655-7726 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL;15.250 IN. DIA ON ONE END;12.750 IN. DIA ON THE OTHER END;7.500 IN.O/A H;14 IN. INSIDE DIA IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL;15.250 IN. DIA ON ONE END;12.750 IN. DIA ON THE OTHER END;7.500 IN.O/A H;14 IN. INSIDE DIA IN
SUBSTITUTES & CROSS-REFERENCES 6
75744-18X1PCASSYSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
73744-18X1PCASSYSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
75744-18X1ASSYSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
655-7726PCASSYSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
73744-18X1ASSYSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
15-97-0980Same 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 655-7726?
655-7726 is a CONNECTION,SOUND ISOLATION.
What parts can replace 655-7726?
There are 6 known substitutes for 655-7726: 75744-18X1PCASSY, 73744-18X1PCASSY, 75744-18X1ASSY and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 655-7726?
655-7726 is cataloged in the U.S. Government catalog under NSN 4730-00-956-7719. 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.