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1779810 ✓ 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 ELBOW,TUBE is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-052-3421, 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
1779810
NSN: 4730-00-052-3421
FSC: 4730
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
end_item_identificationCONTRACTOR LOGISTICS LIFETIME SUPPORT (CRLS), ROLLER, VIBRATORY, SELF-PROPELLED, TYPE II, CATERPILLAR MODEL CS-563D, CONTRACT NO. DAAE07-98-C-S007, NSN 3895-01-456-2735, TM5-3895-383
NSN4730-00-052-3421
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1779810 · 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 21
20708Interchangeable
interchangeable cross-reference
interchangeable
407Interchangeable
interchangeable cross-reference
interchangeable
R18Interchangeable
interchangeable cross-reference
interchangeable
503-S 4Interchangeable
interchangeable cross-reference
interchangeable
31116Interchangeable
interchangeable cross-reference
interchangeable
SMB331485-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1779810?
1779810 is a ELBOW,TUBE.
What parts can replace 1779810?
There are 21 known substitutes for 1779810: 20708, 407, R18 and 18 more. Substitute compatibility should be verified for your specific system.
Is 1779810 still available?
1779810 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026