PartsTable
Technical Data Sheet
4589K91 ✓ 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 REDUCER,PIPE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYVINYL CHLORIDE (PVC) OVERALL, reducer_type: CONCENTRIC, connection_type: THREADED INTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, nominal_thread_size: 0.750 INCHES FIRST END IN, maximum_operating_temp: 85.0 CELSIUS SINGLE RESPONSE DEGC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-163-4440, 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
4589K91
NSN: 4730-00-163-4440
FSC: 4730
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialPLASTIC POLYVINYL CHLORIDE (PVC) OVERALL
reducer_typeCONCENTRIC
connection_typeTHREADED INTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
nominal_thread_size0.750 INCHES FIRST END IN
maximum_operating_temp85.0 CELSIUS SINGLE RESPONSE DEGC
nominal_overall_length2.000 INCHES IN
thread_series_designatorNPT ALL ENDS
NSN4730-00-163-4440
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4589K91 · 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 STYLE: PLAIN (PIPE) FIRST END
MAXIMUM OPERATING TEMP: 85.0 CELSIUS SINGLE RESPONSE DEGC
NOMINAL THREAD SIZE: 0.750 INCHES FIRST END IN
NOMINAL OVERALL LENGTH: 2.000 INCHES IN
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEPLAIN (PIPE) FIRST END
MAXIMUM OPERATING TEMP85.0 CELSIUS SINGLE RESPONSE DEGC
NOMINAL THREAD SIZE0.750 INCHES FIRST END IN
NOMINAL OVERALL LENGTH2.000 INCHES IN
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
NOMINAL THREAD SIZE1.000 INCHES SECOND END IN
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC) OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
5310003025656Interchangeable
interchangeable cross-reference
interchangeable
536-2Interchangeable
interchangeable cross-reference
interchangeable
5932400Interchangeable
interchangeable cross-reference
interchangeable
15A7138Interchangeable
interchangeable cross-reference
interchangeable
A1440Interchangeable
interchangeable cross-reference
interchangeable
100-2-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4589K91?
4589K91 is a REDUCER,PIPE.
What parts can replace 4589K91?
There are 24 known substitutes for 4589K91: 5310003025656, 536-2, 5932400 and 21 more. Substitute compatibility should be verified for your specific system.
Is 4589K91 still available?
4589K91 is currently cancelled.
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