PartsTable
Technical Data Sheet
2256664-4 ✓ 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 TEE,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, leg_length: 1.218 INCHES NOMINAL SECOND END IN, seat_angle: 90.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: PLAIN (PIPE) THIRD END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-247-3492, 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
2256664-4
NSN: 4730-00-247-3492
FSC: 4730
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length1.218 INCHES NOMINAL SECOND END IN
seat_angle90.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_stylePLAIN (PIPE) THIRD END
surface_treatmentPHOSPHATE INSIDE
operating_pressure2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES FIRST END IN
maximum_operating_temp135.0 CELSIUS SINGLE RESPONSE DEGC
thread_series_designatorNPT THIRD END
nominal_outside_diameter_tube_accommodated0.500 INCHES FIRST END IN
NSN4730-00-247-3492
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2256664-4 · 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
LEG LENGTH: 1.218 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE: 0.375 INCHES THIRD END IN
CONNECTION STYLE: PLAIN (PIPE) SECOND END
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
SURFACE TREATMENT: PHOSPHATE INSIDE
MAXIMUM OPERATING TEMP: 135.0 CELSIUS SINGLE RESPONSE DEGC
TECHNICAL CHARACTERISTICS (FLIS)
LEG LENGTH1.218 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE0.375 INCHES THIRD END IN
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
SURFACE TREATMENTPHOSPHATE INSIDE
MAXIMUM OPERATING TEMP135.0 CELSIUS SINGLE RESPONSE DEGC
CONNECTION STYLEPLAIN (PIPE) THIRD END
CONNECTION TYPETHREADED INTERNAL PIPE THIRD END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
LEG LENGTH0.968 INCHES NOMINAL THIRD END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
54-10008Interchangeable
interchangeable cross-reference
interchangeable
53108Interchangeable
interchangeable cross-reference
interchangeable
CC82Interchangeable
interchangeable cross-reference
interchangeable
400099Interchangeable
interchangeable cross-reference
interchangeable
9279-03Interchangeable
interchangeable cross-reference
interchangeable
9108Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2256664-4?
2256664-4 is a TEE,PIPE TO TUBE.
What parts can replace 2256664-4?
There are 15 known substitutes for 2256664-4: 54-10008, 53108, CC82 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2256664-4?
2256664-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-247-3492. This indicates validated use in U.S. government and defense supply chains.
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