PartsTable
Technical Data Sheet
AS5406-3 ✓ 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,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: COPPER OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A CENTER BULKHEAD A, overall_width: 0.250 INCHES IN, overall_length: 0.720 INCHES IN, connection_type: THREADED EXTERNAL BOSS SECOND 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 4730-01-391-4487, 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
AS5406-3
NSN: 4730-01-391-4487
FSC: 4730
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialCOPPER OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class3A CENTER BULKHEAD A
overall_width0.250 INCHES IN
overall_length0.720 INCHES IN
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleFLARED W/ GASKET SEAL (BOSS) SECOND END
basic_shape_styleCRIMP
surface_treatmentTIN OVERALL SINGLE LAYER
material_thickness0.030 INCHES IN
nominal_thread_size0.375 INCHES CENTER BULKHEAD IN
mounting_method_styleRING
NSN4730-01-391-4487
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS5406-3 · 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
SURFACE TREATMENT: PASSIVATE OVERALL
SEAT ANGLE: 37.0 DEGREES FIRST END
THREAD TOLERANCE CLASS: 3A EXTERNAL ALL ENDS A
SPECIFICATION/STANDARD DATA: 88044-AN832 GOVERNMENT STANDARD AND 81343-AS4841 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CONNECTION STYLE: FLARED (TUBE) FIRST END
NOMINAL THREAD SIZE: 0.375 INCHES ALL ENDS IN
THREAD CLASS: 3A ALL ENDS A
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPASSIVATE OVERALL
SEAT ANGLE37.0 DEGREES FIRST END
THREAD TOLERANCE CLASS3A EXTERNAL ALL ENDS A
SPECIFICATION/STANDARD DATA88044-AN832 GOVERNMENT STANDARD AND 81343-AS4841 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL THREAD SIZE0.375 INCHES ALL ENDS IN
THREAD CLASS3A ALL ENDS A
THREAD CLASS3A CENTER BULKHEAD A
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.188 INCHES FIRST END IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
AS54063Interchangeable
interchangeable cross-reference
interchangeable
A85Interchangeable
interchangeable cross-reference
interchangeable
252-7108324PN238Interchangeable
interchangeable cross-reference
interchangeable
AS5406Interchangeable
Same NIIN cross-reference
interchangeable
SAE-AS4841Interchangeable
Same NIIN cross-reference
interchangeable
AS4841Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS5406-3?
AS5406-3 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace AS5406-3?
There are 8 known substitutes for AS5406-3: AS54063, A85, 252-7108324PN238 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS5406-3?
AS5406-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-391-4487. This indicates validated use in U.S. government and defense supply chains.
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