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6393051-1 — INVERTED NUT,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6393051-1: INVERTED NUT,TUBE COUPLING.

The INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, thread_size: 1-11 1/2, overall_length: 1.680 INCHES NOMINAL IN, special_features: WEAPON SYSTEM ESSENTIAL; INVERTED NUT WITH PIPE THREADS; MATERIAL IS MONEL K500, style_designator: INVERTED NUT, TUBE, FLARE, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-524-7678, 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
6393051-1
NSN: 4730-01-524-7678
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY
thread_size1-11 1/2
overall_length1.680 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL; INVERTED NUT WITH PIPE THREADS; MATERIAL IS MONEL K500
style_designatorINVERTED NUT, TUBE, FLARE
thread_directionRIGHT-HAND
width_across_flats1.500 INCHES NOMINAL IN
end_item_identificationCOVER ASSEMBLY
smallest_inside_diameter1.000 INCHES NOMINAL IN
criticality_code_justificationFEAT
screw_thread_series_designatorNPT
part_name_assigned_by_controlling_agencyNIPPLE, COVER, MATING
NSN4730-01-524-7678
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6393051-1 · 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
•
WIDTH ACROSS FLATS: 1.500 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.000 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, FLARE
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SIZE: 1-11 1/2
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.500 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.000 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONFEAT
STYLE DESIGNATORINVERTED NUT, TUBE, FLARE
OVERALL LENGTH1.680 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD SIZE1-11 1/2
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL; INVERTED NUT WITH PIPE THREADS; MATERIAL IS MONEL K500
SCREW THREAD SERIES DESIGNATORNPT
PART NAME ASSIGNED BY CONTROLLING AGENCYNIPPLE, COVER, MATING
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
6393438 FIND 010Same 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 6393051-1?
6393051-1 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 6393051-1?
There is 1 known substitute for 6393051-1: 6393438 FIND 010. Substitute compatibility should be verified for your specific system.
What is the NSN for 6393051-1?
6393051-1 is cataloged in the U.S. Government catalog under NSN 4730-01-524-7678. 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.