PartsTable
Technical Data Sheet
W1579 ✓ 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,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: THREADED INTERNAL PIPE SECOND END, connection_style: PLAIN (PIPE) SECOND END, nominal_thread_size: 1.500 INCHES SECOND END IN, nominal_overall_length: 2.019 INCHES IN, thread_series_designator: NPTF SECOND END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-266-1812, 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
W1579
NSN: 4730-00-266-1812
FSC: 4730
CAGE: 41947 — MUELLER BRASS CO. (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeTHREADED INTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) SECOND END
nominal_thread_size1.500 INCHES SECOND END IN
nominal_overall_length2.019 INCHES IN
thread_series_designatorNPTF SECOND END
material_document_and_classificationMIL-T-16420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated1.575 INCHES FIRST END IN
tubing_wall_nominal_thickness_for_which_designed0.041 INCHES FIRST END IN
NSN4730-00-266-1812
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: W1579 · 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 TYPE: THREADED INTERNAL PIPE SECOND END
CONNECTION STYLE: PLAIN (PIPE) SECOND END
MATERIAL: COPPER ALLOY OVERALL
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED: 0.041 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.575 INCHES FIRST END IN
NOMINAL THREAD SIZE: 1.500 INCHES SECOND END IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-T-16420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
CONNECTION STYLEPLAIN (PIPE) SECOND END
MATERIALCOPPER ALLOY OVERALL
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.041 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.575 INCHES FIRST END IN
NOMINAL THREAD SIZE1.500 INCHES SECOND END IN
CONNECTION STYLEPLAIN (TUBE) FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-T-16420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OVERALL LENGTH2.019 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
W1571Interchangeable
interchangeable cross-reference
interchangeable
A1589Interchangeable
interchangeable cross-reference
interchangeable
9975206-8Interchangeable
interchangeable cross-reference
interchangeable
IT009901Interchangeable
interchangeable cross-reference
interchangeable
130016Interchangeable
interchangeable cross-reference
interchangeable
A-3709Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is W1579?
W1579 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace W1579?
There are 11 known substitutes for W1579: W1571, A1589, 9975206-8 and 8 more. Substitute compatibility should be verified for your specific system.
Is W1579 still available?
W1579 is currently cancelled.
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