PartsTable
Technical Data Sheet
1551AS264-4 ✓ 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 ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, seat_angle: 12.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: FLARELESS (TUBE) FIRST END, special_features: SPECIAL CLEANING FOR OXYGEN SERVICE IAW ASTM G93. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-303-1235, 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
1551AS264-4
NSN: 4730-01-303-1235
FSC: 4730
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
seat_angle12.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARELESS (TUBE) FIRST END
special_featuresSPECIAL CLEANING FOR OXYGEN SERVICE IAW ASTM G93
nominal_thread_size0.250 INCHES SECOND END IN
nominal_overall_length1.484 INCHES IN
thread_series_designatorNPT SECOND END
furnished_items_and_quantity1 TUBE COUPLING NUT W/SLEEVE
material_document_and_classificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.250 INCHES FIRST END IN
NSN4730-01-303-1235
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1551AS264-4 · 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
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END IN
THREAD CLASS: 3A FIRST END A
NOMINAL OVERALL LENGTH: 1.484 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
SEAT ANGLE: 12.0 DEGREES FIRST END
THREAD SERIES DESIGNATOR: UNF FIRST END
CONNECTION STYLE: FLARELESS (TUBE) FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
THREAD CLASS3A FIRST END A
NOMINAL OVERALL LENGTH1.484 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL THREAD SIZE0.250 INCHES SECOND END IN
SEAT ANGLE12.0 DEGREES FIRST END
THREAD SERIES DESIGNATORUNF FIRST END
CONNECTION STYLEFLARELESS (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
FURNISHED ITEMS AND QUANTITY1 TUBE COUPLING NUT W/SLEEVE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
SS-400-1-4Interchangeable
interchangeable cross-reference
interchangeable
2913 006 01154Interchangeable
interchangeable cross-reference
interchangeable
533492Interchangeable
interchangeable cross-reference
interchangeable
1551AS264Interchangeable
interchangeable cross-reference
interchangeable
1551AS264-3Interchangeable
interchangeable cross-reference
interchangeable
SS400-1-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1551AS264-4?
1551AS264-4 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 1551AS264-4?
There are 6 known substitutes for 1551AS264-4: SS-400-1-4, 2913 006 01154, 533492 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1551AS264-4?
1551AS264-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-303-1235. This indicates validated use in U.S. government and defense supply chains.
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