PartsTable
Technical Data Sheet
A3SA59-06-06 ✓ 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 UNION,TUBE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, seat_type: GASKET, thread_class: 2A SECOND END A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END, style_designator: THREADED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-344-1038, 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
A3SA59-06-06
NSN: 4730-01-344-1038
FSC: 4730
CAGE: 0JC12 — BEC SYSTEMS LLC DBA BEC MACHINE PRODUCTS (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
seat_typeGASKET
thread_class2A SECOND END A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
style_designatorTHREADED
nominal_thread_size0.563 INCHES SECOND END IN
nominal_overall_length1.625 INCHES IN
thread_series_designatorUNF SECOND END
nominal_outside_diameter_tube_accommodated0.375 INCHES FIRST END IN
NSN4730-01-344-1038
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A3SA59-06-06 · 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
THREAD CLASS: 2A SECOND END A
CONNECTION STYLE: SOCKET (TUBE) FIRST END
SEAT TYPE: GASKET
CONNECTION TYPE: UNTHREADED INTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES FIRST END IN
NOMINAL OVERALL LENGTH: 1.625 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A SECOND END A
CONNECTION STYLESOCKET (TUBE) FIRST END
SEAT TYPEGASKET
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES FIRST END IN
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
NOMINAL OVERALL LENGTH1.625 INCHES IN
NOMINAL THREAD SIZE0.563 INCHES SECOND END IN
THREAD SERIES DESIGNATORUNF SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
QQN281CLASSAInterchangeable
interchangeable cross-reference
interchangeable
QQ-N-281Interchangeable
interchangeable cross-reference
interchangeable
B16.1 ANNEALEDInterchangeable
interchangeable cross-reference
interchangeable
B16.1Interchangeable
interchangeable cross-reference
interchangeable
AMS2806BInterchangeable
interchangeable cross-reference
interchangeable
QQ-N-281D CLASS A SPR TMPRInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A3SA59-06-06?
A3SA59-06-06 is a UNION,TUBE.
What parts can replace A3SA59-06-06?
There are 11 known substitutes for A3SA59-06-06: QQN281CLASSA, QQ-N-281, B16.1 ANNEALED and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A3SA59-06-06?
A3SA59-06-06 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-344-1038. This indicates validated use in U.S. government and defense supply chains.
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