PartsTable
Technical Data Sheet

AS85421/14T04 — ELBOW,BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AS85421/14T04: ELBOW,BOSS.

The ELBOW,BOSS is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R56400 OVERALL, flow_angle: 90.0 DEGREES, thread_class: 3B SECOND END, connection_type: THREADED INTERNAL TUBE SECOND END, connection_style: PLAIN (TUBE) FIRST END, operating_pressure: 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-671-3263, 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
AS85421/14T04
NSN: 4730-01-671-3263
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R56400 OVERALL
flow_angle90.0 DEGREES
thread_class3B SECOND END
connection_typeTHREADED INTERNAL TUBE SECOND END
connection_stylePLAIN (TUBE) FIRST END
operating_pressure4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.4375 INCHES ALL ENDS IN
end_item_identificationF-35 AIRCRAFT
thread_quantity_per_inch24 ALL ENDS
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) ALL ENDS
part_name_assigned_by_controlling_agencyFITTING, ELBOW, 90 DEGREES, BEAM SEAL, 3000/4000 PSI, MALE TO FEMALE
nominal_outside_diameter_tube_accommodated0.250 INCHES ALL ENDS IN
NSN4730-01-671-3263
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS85421/14T04 · 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
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: SWIVEL NUT, GASKET SEAL (TUBE) SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL BOSS FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 0.4375 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLESWIVEL NUT, GASKET SEAL (TUBE) SECOND END
CONNECTION STYLEPLAIN (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS FIRST END
CONNECTION TYPETHREADED INTERNAL TUBE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
OPERATING PRESSURE4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.4375 INCHES ALL ENDS IN
PART NAME ASSIGNED BY CONTROLLING AGENCYFITTING, ELBOW, 90 DEGREES, BEAM SEAL, 3000/4000 PSI, MALE TO FEMALE
THREAD CLASS3A FIRST END A
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 3
SAE-AS85421/14Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AS85421/14Reference document
Same NSN cross-reference
Reference document — Secondary reference
M85421/14T04Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS85421/14T04?
AS85421/14T04 is a ELBOW,BOSS.
What parts can replace AS85421/14T04?
There are 3 known substitutes for AS85421/14T04: SAE-AS85421/14, AS85421/14, M85421/14T04. Substitute compatibility should be verified for your specific system.
What is the NSN for AS85421/14T04?
AS85421/14T04 is cataloged in the U.S. Government catalog under NSN 4730-01-671-3263. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.