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Worldwide distributor of NSN parts and consumables located in the USA.

Engine Poppet Valve

Model / MPN: 20020A | NSN: 2805-00-517-9928
ITAR Registered seal

A mushroom or tulip-shaped item having a circular head with a conical face and an extended stem used to regulate the flow of incoming fuel-air mixture or air into the combustion chamber or exhaust gases from the combustion chamber of a reciprocating internal combustion engine.

Product Details
NATO Stock Number
2805-00-517-9928
Sold in multiples of
DEMIL
NO
Head Style
Flat
Head Height
Between 0.1870 inches and 0.1970 inches
Chamfer Angle In Deg
45.0
Chamfer Length
0.0300 inches
Taper Angle In Deg
15.0
Outside Diameter
Between 1.7760 inches and 1.7860 inches
Minor Outside Diameter
Between 0.2450 inches and 0.2490 inches
Minor Diameter Length
0.1880 inches
Seat Angle In Deg
60.0
Stem Style
Tapered
Carbon Relief Groove
Not included
Neck Radius
0.5000 inches
Stem Length
Between 5.6395 inches and 5.6745 inches
Stem Diameter
Between 0.3720 inches and 0.3730 inches
Distance From Minor Diameter To Stem End
Between 0.2170 inches and 0.2190 inches
Material And Location
Steel, federal standard 66, sae ev3 head
Material And Location
Steel, federal standard 66, aisi/sae 8645 stem
Fsc Application Data
Gasoline engine
20020A Series Parts

Pricing and Availability

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20020A Cross Reference
  • 20020A
  • 5045
  • 20020A
  • 5045