PartsTable
Technical Data Sheet
6-6-4 040425B ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OR COPPER ALLOY 345 OVERALL, leg_length: 0.547 INCHES NOMINAL SECOND END IN, seat_angle: 42.0 DEGREES SECOND END, thread_class: 2B FIRST END, connection_type: THREADED INTERNAL TUBE SECOND END, connection_style: PLAIN (PIPE) THIRD END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-249-8280, 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
6-6-4 040425B
NSN: 4730-00-249-8280
FSC: 4730
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OR COPPER ALLOY 345 OVERALL
leg_length0.547 INCHES NOMINAL SECOND END IN
seat_angle42.0 DEGREES SECOND END
thread_class2B FIRST END
connection_typeTHREADED INTERNAL TUBE SECOND END
connection_stylePLAIN (PIPE) THIRD END
nominal_thread_size0.625 INCHES SECOND END IN
thread_series_designatorUNF FIRST END
nondefinitive_spec/std_data7B FIGURE
specification/standard_data81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_outside_diameter_tube_accommodated0.375 INCHES FIRST END IN
NSN4730-00-249-8280
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6-6-4 040425B · 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
SPECIFICATION/STANDARD DATA: 81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD SERIES DESIGNATOR: NPTF THIRD END
CONNECTION TYPE: THREADED EXTERNAL PIPE THIRD END
NOMINAL THREAD SIZE: 0.625 INCHES SECOND END IN
SEAT ANGLE: 42.0 DEGREES FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD SERIES DESIGNATORNPTF THIRD END
CONNECTION TYPETHREADED EXTERNAL PIPE THIRD END
NOMINAL THREAD SIZE0.625 INCHES SECOND END IN
CONNECTION TYPETHREADED INTERNAL TUBE SECOND END
SEAT ANGLE42.0 DEGREES FIRST END
THREAD SERIES DESIGNATORUNF FIRST END
SEAT ANGLE42.0 DEGREES SECOND END
LEG LENGTH0.940 INCHES NOMINAL THIRD END IN
THREAD CLASS2B SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
959.61.81.175Interchangeable
interchangeable cross-reference
interchangeable
6-00X6Interchangeable
interchangeable cross-reference
interchangeable
001-317-0Interchangeable
interchangeable cross-reference
interchangeable
SAE-J512Interchangeable
Same NIIN cross-reference
interchangeable
SAE J512 6-6-4 040425BInterchangeable
Same NIIN cross-reference
interchangeable
245IFHD-6-4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6-6-4 040425B?
6-6-4 040425B is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 6-6-4 040425B?
There are 8 known substitutes for 6-6-4 040425B: 959.61.81.175, 6-00X6, 001-317-0 and 5 more. Substitute compatibility should be verified for your specific system.
Is 6-6-4 040425B still available?
6-6-4 040425B is currently cancelled.
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