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AS5406R04 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AS5406R04: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: FLARED W/ GASKET SEAL (BOSS) SECOND END, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-150-0874, 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
AS5406R04
NSN: 4730-01-150-0874
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARED W/ GASKET SEAL (BOSS) SECOND END
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.438 INCHES SECOND END BULKHEAD IN
nominal_overall_length2.047 INCHES IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
specification/standard_data88044-AN832 GOVERNMENT STANDARD AND 81343-AS4841 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.250 INCHES FIRST END IN
NSN4730-01-150-0874
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS5406R04 · 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
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 2.047 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL OVERALL LENGTH2.047 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.438 INCHES SECOND END BULKHEAD IN
SEAT ANGLE37.0 DEGREES FIRST END
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 5
AS4841Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS5406Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN832-4SReference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS4841Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MIL-F-5509Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS5406R04?
AS5406R04 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace AS5406R04?
There are 5 known substitutes for AS5406R04: AS4841, AS5406, AN832-4S and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS5406R04?
AS5406R04 is cataloged in the U.S. Government catalog under NSN 4730-01-150-0874. This indicates validated use in U.S. government and defense supply chains.
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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.