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6404-04-02 — ADAPTER,STRAIGHT,FLANGE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6404-04-02: ADAPTER,STRAIGHT,FLANGE TO BOSS.

ADAPTER,STRAIGHT,FLANGE TO BOSS. Key specifications include material: STEEL OVERALL, connection_type: THREADED INTERNAL BOSS FIRST END, special_features: HAS SURFACE FINISH OF YELLOW DICHROMATE, style_designator: RIGID, THREADED INTERNAL AND EXTERNAL, surface_treatment: ZINC OVERALL, nominal_thread_size: 0.125 INCHES SECOND END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-594-6959, 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
6404-04-02
NSN: 4730-01-594-6959
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 5E240 — BRENNAN INDUSTRIES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED INTERNAL BOSS FIRST END
special_featuresHAS SURFACE FINISH OF YELLOW DICHROMATE
style_designatorRIGID, THREADED INTERNAL AND EXTERNAL
surface_treatmentZINC OVERALL
nominal_thread_size0.125 INCHES SECOND END IN
thread_quantity_per_inch24 SECOND END
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SECOND END
part_name_assigned_by_controlling_agencyFEMALE BOSS X MALE PIPE ADAPTER
NSN4730-01-594-6959
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6404-04-02 · 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 TYPE: THREADED EXTERNAL PIPE SECOND END
•
STYLE DESIGNATOR: RIGID, THREADED INTERNAL AND EXTERNAL
•
NOMINAL THREAD SIZE: 0.125 INCHES SECOND END IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL BOSS FIRST END
STYLE DESIGNATORRIGID, THREADED INTERNAL AND EXTERNAL
NOMINAL THREAD SIZE0.125 INCHES SECOND END IN
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
SPECIAL FEATURESHAS SURFACE FINISH OF YELLOW DICHROMATE
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYFEMALE BOSS X MALE PIPE ADAPTER
THREAD QUANTITY PER INCH24 SECOND END
THREAD QUANTITY PER INCH20 FIRST END
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6404-04-02?
6404-04-02 is a ADAPTER,STRAIGHT,FLANGE TO BOSS.
What is the NSN for 6404-04-02?
6404-04-02 is cataloged in the U.S. Government catalog under NSN 4730-01-594-6959. This indicates validated use in U.S. government and defense supply chains.
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