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

Engine Poppet Valve

Model / MPN: B620 | NSN: 2805-00-203-8640
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
2805-00-203-8640
Sold in multiples of
1 EA
DEMIL
NO
Head Style
Concave
Head Height
Between 0.1620 inches and 0.1720 inches
Chamfer Angle In Deg
45.0
Groove Diameter
Between 0.3590 inches and 0.3650 inches
Chamfer Length
0.0300 inches
Groove Width
Between 0.1560 inches and 0.1660 inches
Outside Diameter
Between 2.3070 inches and 2.3170 inches
Seat Angle In Deg
45.0
Stem Style
Grooved
Carbon Relief Groove
Not included
Neck Radius
0.5000 inches
Stem Length
Between 4.7140 inches and 4.7240 inches
Stem Diameter
Between 0.4330 inches and 0.4340 inches
Distance From Groove To Stem End
0.3200 inches
Material And Location
Steel
B620 Series Parts

Pricing and Availability

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B620 Cross Reference
  • SA532129
  • 532129