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3970AS509 FN 7 — COUPLING HALF,GROOVED CLAMP CONN

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3970AS509 FN 7: COUPLING HALF,GROOVED CLAMP CONN.

COUPLING HALF,GROOVED CLAMP CONN. Key specifications include construction: ONE-PIECE, outside_diameter: 0.640 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN, aperture_diameter: 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-686-2795, 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
3970AS509 FN 7
NSN: 4730-01-686-2795
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
constructionONE-PIECE
outside_diameter0.640 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
aperture_diameter0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
NSN4730-01-686-2795
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3970AS509 FN 7 · 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

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 3970AS509 FN 7?
3970AS509 FN 7 is a COUPLING HALF,GROOVED CLAMP CONN.
What is the NSN for 3970AS509 FN 7?
3970AS509 FN 7 is cataloged in the U.S. Government catalog under NSN 4730-01-686-2795. 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.