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AS21909W6 ✓ 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,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075 OVERALL, leg_length: 1.062 INCHES NOMINAL SECOND END1.062 INCHES NOMINAL SECOND END IN, seat_angle: 12.0 DEGREES ALL ENDS, thread_class: 3A THIRD END BULKHEAD3A THIRD END BULKHEAD A, connection_type: THREADED EXTERNAL TUBE ALL ENDSTHREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARELESS (TUBE) ALL ENDSFLARELESS (TUBE) ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-483-4902, 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
AS21909W6
NSN: 4730-00-483-4902
FSC: 4730
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075 OVERALL
leg_length1.062 INCHES NOMINAL SECOND END1.062 INCHES NOMINAL SECOND END IN
seat_angle12.0 DEGREES ALL ENDS
thread_class3A THIRD END BULKHEAD3A THIRD END BULKHEAD A
connection_typeTHREADED EXTERNAL TUBE ALL ENDSTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARELESS (TUBE) ALL ENDSFLARELESS (TUBE) ALL ENDS
surface_treatmentANODIZE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.562 INCHES ALL ENDS0.562 INCHES ALL ENDS IN
maximum_operating_temp135.0 CELSIUS SINGLE RESPONSE135.0 CELSIUS SINGLE RESPONSE DEGC
end_item_identificationS-3A VIKING AIRCRAFTS-3A VIKING AIRCRAFT A
media_for_which_designedAERONAUTICAL FLUID SINGLE RESPONSE
NSN4730-00-483-4902
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS21909W6 · 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
•
MAXIMUM OPERATING TEMP: 135.0 CELSIUS SINGLE RESPONSE135.0 CELSIUS SINGLE RESPONSE DEGC
•
CONNECTION STYLE: FLARELESS (TUBE) ALL ENDSFLARELESS (TUBE) ALL ENDS
•
NOMINAL THREAD SIZE: 0.562 INCHES ALL ENDS0.562 INCHES ALL ENDS IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) THIRD END BULKHEAD
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDSTHREADED EXTERNAL TUBE ALL ENDS
•
MEDIA FOR WHICH DESIGNED: AERONAUTICAL FLUID SINGLE RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP135.0 CELSIUS SINGLE RESPONSE135.0 CELSIUS SINGLE RESPONSE DEGC
CONNECTION STYLEFLARELESS (TUBE) ALL ENDSFLARELESS (TUBE) ALL ENDS
NOMINAL THREAD SIZE0.562 INCHES ALL ENDS0.562 INCHES ALL ENDS IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) THIRD END BULKHEAD
END ITEM IDENTIFICATIONS-3A VIKING AIRCRAFTS-3A VIKING AIRCRAFT A
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDSTHREADED EXTERNAL TUBE ALL ENDS
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) THIRD END BULKHEADUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
MEDIA FOR WHICH DESIGNEDAERONAUTICAL FLUID SINGLE RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-367,T73 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
LEG LENGTH1.062 INCHES NOMINAL SECOND END1.062 INCHES NOMINAL SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
AS21909Interchangeable
interchangeable cross-reference
interchangeable
MS21909W6Interchangeable
interchangeable cross-reference
interchangeable
AS18280Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS18280Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS21909W6?
AS21909W6 is a TEE,TUBE.
What parts can replace AS21909W6?
There are 4 known substitutes for AS21909W6: AS21909, MS21909W6, AS18280 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS21909W6?
AS21909W6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-483-4902. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026