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799644-1 — TAPPET,ENGINE POPPET VALVE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

799644-1: TAPPET,ENGINE POPPET VALVE.

The TAPPET,ENGINE POPPET VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 0.210 INCHES NOMINAL IN, neck_height: 0.870 INCHES NOMINAL IN, flange_diameter: 3.250 INCHES NOMINAL IN, style_designator: ROUND, ONE BOLT HOLE CIRCLE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-347-8568, 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
799644-1
NSN: 4730-01-347-8568
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL
thickness0.210 INCHES NOMINAL IN
neck_height0.870 INCHES NOMINAL IN
flange_diameter3.250 INCHES NOMINAL IN
style_designatorROUND, ONE BOLT HOLE CIRCLE
NSN4730-01-347-8568
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 799644-1 · 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
•
FLANGE DIAMETER: 3.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
•
NECK HEIGHT: 0.870 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
THICKNESS: 0.210 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER3.250 INCHES NOMINAL IN
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
NECK HEIGHT0.870 INCHES NOMINAL IN
MATERIALSTEEL
THICKNESS0.210 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
20185-250FSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
799644Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 799644-1?
799644-1 is a TAPPET,ENGINE POPPET VALVE.
What parts can replace 799644-1?
There are 2 known substitutes for 799644-1: 20185-250F, 799644. Substitute compatibility should be verified for your specific system.
What is the NSN for 799644-1?
799644-1 is cataloged in the U.S. Government catalog under NSN 4730-01-347-8568. 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.