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Technical Data Sheet
PartsTable / COMPONENT / ASME B16.39
ASME B16.39 ✓ 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 ASME B16.39 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-189-2596, 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
ASME B16.39
NSN: 4730-00-189-2596
FSC: 4730
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
Part NumberASME B16.39
NSN4730-00-189-2596
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ASME B16.39 · 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 SERIES DESIGNATOR: NPT ALL ENDS
•
SPECIFICATION/STANDARD DATA: 05047-ASME B16.39 GOVERNMENT SPECIFICATION
•
MATERIAL: IRON OR STEEL OVERALL
•
COUPLING FLANGE SHAPE: HEXAGON
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMA197 ASSN STD 1ST MATERIAL RESPONSE OR QQ-A-666 FED STD 2ND MATERIAL RESPONSE OVERALL
•
REDUCER TYPE: CONCENTRIC
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT ALL ENDS
SPECIFICATION/STANDARD DATA05047-ASME B16.39 GOVERNMENT SPECIFICATION
MATERIALIRON OR STEEL OVERALL
COUPLING FLANGE SHAPEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONASTMA197 ASSN STD 1ST MATERIAL RESPONSE OR QQ-A-666 FED STD 2ND MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
REDUCER TYPECONCENTRIC
COUPLING FLANGE SHAPEHEXAGON
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
NOMINAL OVERALL LENGTH1.630 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
ASME B16.39Interchangeable
interchangeable cross-reference
interchangeable
7227Interchangeable
interchangeable cross-reference
interchangeable
MIL-U-18250TYPEXAInterchangeable
interchangeable cross-reference
interchangeable
MILU18250Interchangeable
interchangeable cross-reference
interchangeable
853210709Interchangeable
interchangeable cross-reference
interchangeable
1631-400Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ASME B16.39?
ASME B16.39 is a ASME B16.39.
What parts can replace ASME B16.39?
There are 9 known substitutes for ASME B16.39: ASME B16.39, 7227, MIL-U-18250TYPEXA and 6 more. Substitute compatibility should be verified for your specific system.
Is ASME B16.39 still available?
ASME B16.39 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026