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Technical Data Sheet
PartsTable / COMPONENT / 818839
818839 ✓ 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 COOLER,LUBRICATING OIL,ENGINE is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-568-8808, 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
818839
NSN: 4730-01-568-8808
FSC: 4730
CAGE: 47NR0 — ADAMS THERMAL SYSTEMS INC (USA)
SPECIFICATIONS
Part Number818839
NSN4730-01-568-8808
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 818839 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
21721Interchangeable
interchangeable cross-reference
interchangeable
2930PL2109408Interchangeable
interchangeable cross-reference
interchangeable
X21678Interchangeable
interchangeable cross-reference
interchangeable
817549Interchangeable
interchangeable cross-reference
interchangeable
6038409Interchangeable
interchangeable cross-reference
interchangeable
5717382Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 818839?
818839 is a COOLER,LUBRICATING OIL,ENGINE.
What parts can replace 818839?
There are 7 known substitutes for 818839: 21721, 2930PL2109408, X21678 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 818839?
818839 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-568-8808. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026