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4589K79 — REDUCER,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4589K79: REDUCER,PIPE.

The REDUCER,PIPE is a the manufacturer industrial component. Key specifications include reducer_type: CONCENTRIC. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-163-4439, 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
4589K79
NSN: 4730-00-163-4439
NIINs: 001634439, 014987140
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
reducer_typeCONCENTRIC
NSN4730-00-163-4439
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4589K79 · 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
•
NOMINAL OVERALL LENGTH: 1.500 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
•
NOMINAL THREAD SIZE: 1.000 INCHES SECOND END IN
•
MAXIMUM OPERATING TEMP: 85.0 CELSIUS SINGLE RESPONSE DEGC
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
NOMINAL OVERALL LENGTH1.500 INCHES IN
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
NOMINAL THREAD SIZE1.000 INCHES SECOND END IN
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
MAXIMUM OPERATING TEMP85.0 CELSIUS SINGLE RESPONSE DEGC
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC) OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 5
059408Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1M851FDReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5118-3-4 1X1/2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3M851FDReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
05050034Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4589K79?
4589K79 is a REDUCER,PIPE.
What parts can replace 4589K79?
There are 5 known substitutes for 4589K79: 059408, 1M851FD, 5118-3-4 1X1/2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4589K79?
4589K79 is cataloged in the U.S. Government catalog under NSN 4730-00-163-4439. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.