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6404-04-0-SS — PLUG,MACHINE THREAD

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6404-04-0-SS: PLUG,MACHINE THREAD.

The PLUG,MACHINE THREAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, connection_style: EXTERNAL SEAT FOR GASKET SEAL, style_designator: PLUG, MACHINE, nominal_thread_size: 0.250 INCHES EXTERNAL IN, end_item_identification: DAVIT SLEWING, thread_quantity_per_inch: 20 EXTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-687-9833, 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
6404-04-0-SS
NSN: 4730-01-687-9833
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 6KBN0 — BRENNAN INDUSTRIES, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
connection_styleEXTERNAL SEAT FOR GASKET SEAL
style_designatorPLUG, MACHINE
nominal_thread_size0.250 INCHES EXTERNAL IN
end_item_identificationDAVIT SLEWING
thread_quantity_per_inch20 EXTERNAL
part_name_assigned_by_controlling_agencyPLUG MALE O-RING BOSS
NSN4730-01-687-9833
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6404-04-0-SS · 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
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL
•
STYLE DESIGNATOR: PLUG, MACHINE
•
NOMINAL THREAD SIZE: 0.250 INCHES EXTERNAL IN
•
THREAD QUANTITY PER INCH: 20 EXTERNAL
•
MATERIAL: STEEL COMP 316 OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL
STYLE DESIGNATORPLUG, MACHINE
NOMINAL THREAD SIZE0.250 INCHES EXTERNAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYPLUG MALE O-RING BOSS
END ITEM IDENTIFICATIONDAVIT SLEWING
THREAD QUANTITY PER INCH20 EXTERNAL
MATERIALSTEEL COMP 316 OVERALL
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6404-04-0-SS?
6404-04-0-SS is a PLUG,MACHINE THREAD.
What is the NSN for 6404-04-0-SS?
6404-04-0-SS is cataloged in the U.S. Government catalog under NSN 4730-01-687-9833. 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.