PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1390-2X3/4
1390-2X3/4 ✓ 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 1390-2X3/4 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-023-0825, 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
1390-2X3/4
NSN: 4730-01-023-0825
FSC: 4730
CAGE: 34646 — ATI LADISH LLC DBA ATI WAH CHANG DIV ATI FORGED PRODUCTS - CUDAHY (USA)
SPECIFICATIONS
Part Number1390-2X3/4
NSN4730-01-023-0825
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1390-2X3/4 · 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
•
MATERIAL: STEEL OVERALL
•
CONNECTION STYLE: PLAIN (PIPE) SECOND END
•
CONNECTION TYPE: UNTHREADED EXTERNAL PIPE SECOND END
•
NOMINAL PIPE SIZE ACCOMMODATED: 2.000 INCHES SECOND END IN
•
NOMINAL OVERALL LENGTH: 1.562 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION TYPEUNTHREADED EXTERNAL PIPE SECOND END
CONNECTION STYLESOCKET (PIPE) FIRST END
NOMINAL PIPE SIZE ACCOMMODATED2.000 INCHES SECOND END IN
NOMINAL OVERALL LENGTH1.562 INCHES IN
NOMINAL PIPE SIZE ACCOMMODATED0.750 INCHES FIRST END IN
CONNECTION TYPEUNTHREADED INTERNAL PIPE FIRST END
REDUCER TYPECONCENTRIC
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE 80 FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
B16.11-73Interchangeable
interchangeable cross-reference
interchangeable
B16-11-1-2IN-IPS1500PSI45ELLInterchangeable
interchangeable cross-reference
interchangeable
B16-11SCHEDULE80Interchangeable
interchangeable cross-reference
interchangeable
SW243-1 1-4Interchangeable
interchangeable cross-reference
interchangeable
1381-1 1-4INInterchangeable
interchangeable cross-reference
interchangeable
B16-11-73Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1390-2X3/4?
1390-2X3/4 is a 1390-2X3/4.
What parts can replace 1390-2X3/4?
There are 13 known substitutes for 1390-2X3/4: B16.11-73, B16-11-1-2IN-IPS1500PSI45ELL, B16-11SCHEDULE80 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1390-2X3/4?
1390-2X3/4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-023-0825. 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