Model: 138874

Engine Poppet Valve

Properties:

Head Style
Mushroom
Head Height
0.4750 inches
Chamfer Angle In Deg
45.0
Groove Diameter
Between 0.6340 inches and 0.6360 inches
Chamfer Length
0.0200 inches
Groove Width
0.2670 inches
Outside Diameter
Between 3.2950 inches and 3.3050 inches
Seat Angle In Deg
37.0
Stem Style
Grooved
Carbon Relief Groove
Not included
Neck Radius
1.4400 inches
Stem Length
Between 5.4260 inches and 5.4360 inches
Stem Diameter
Between 0.6835 inches and 0.6840 inches
Distance From Groove To Stem End
Between 0.2230 inches and 0.2430 inches
Material And Location
Sodium internal filling
Material And Location
Steel head
Material And Location
Steel stem
Metallic Hardness Rating And Location
54.0 rockwell c tip
Fsc Application Data
Aircraft eng r1300
NSN
2810-00-306-5846
Part Number
138874
Description
Valve,poppet,engine
CAGE
0AHP5

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.

Part 138874 NSN 2810-00-306-5846

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15884
FIIG:
A11200
Concept No.:
1
App. Key:
A
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8409100080
  • SITC: 71319
  • End Use: Engines and turbines for military aircraft
  • NAICS: 336412
  • USDA: 1

Freight Class: Parts for spark-ignition or compression-ignition internal combustion piston engines for use in aircraft except civil

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