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6351074-4L1 — COUPLING,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6351074-4L1: COUPLING,PIPE.

The COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, connection_type: THREADED EXTERNAL PIPE SECOND END, connection_style: PLAIN (PIPE) SECOND END, style_designator: THREADED AND PLAIN, nominal_thread_size: 2.000 INCHES FIRST END IN, nominal_overall_length: 2.500 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-641-0866, 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
6351074-4L1
NSN: 4730-01-641-0866
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) SECOND END
style_designatorTHREADED AND PLAIN
nominal_thread_size2.000 INCHES FIRST END IN
nominal_overall_length2.500 INCHES IN
thread_series_designatorNPT SECOND END
nominal_pipe_size_accommodated2.000 INCHES FIRST END IN
NSN4730-01-641-0866
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6351074-4L1 · 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 3
6351074-4Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
122-7064174 FN9-4L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
122-7064174 FN9-4Reference 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 6351074-4L1?
6351074-4L1 is a COUPLING,PIPE.
What parts can replace 6351074-4L1?
There are 3 known substitutes for 6351074-4L1: 6351074-4, 122-7064174 FN9-4L1, 122-7064174 FN9-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 6351074-4L1?
6351074-4L1 is cataloged in the U.S. Government catalog under NSN 4730-01-641-0866. 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.