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Technical Data Sheet
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839-338C — REDUCER,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

839-338C: REDUCER,PIPE.

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

Government catalog under NSN 4730-01-239-8399, 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
839-338C
NSN: 4730-01-239-8399
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 62531 — SPEARS MANUFACTURING CO. (USA)
SPECIFICATIONS
inclosure_typeENCAPSULATED
NSN4730-01-239-8399
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 839-338C · 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
SUBSTITUTES & CROSS-REFERENCES 4
4589K101Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
059424Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5118-3-4 3X2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
05050069Reference 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 839-338C?
839-338C is a REDUCER,PIPE.
What parts can replace 839-338C?
There are 4 known substitutes for 839-338C: 4589K101, 059424, 5118-3-4 3X2 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 839-338C?
839-338C is cataloged in the U.S. Government catalog under NSN 4730-01-239-8399. 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.