Model: 168735M20

Engine Poppet Valve

Properties:

Head Style
Mushroom
Head Height
Between 0.4860 inches and 0.5160 inches
Groove Diameter
Between 0.5660 inches and 0.5700 inches
Groove Width
Between 0.1865 inches and 0.1885 inches
Outside Diameter
Between 2.5680 inches and 2.5980 inches
Seat Angle In Deg
45.0
Stem Style
Grooved
Carbon Relief Groove
Included
Neck Radius
0.8750 inches
Stem Length
Between 5.6070 inches and 5.6370 inches
Stem Diameter
Between 0.6615 inches and 0.6625 inches
Distance From Groove To Stem End
Between 0.2230 inches and 0.2330 inches
Material And Location
Steel pwa678 77445
Fsc Application Data
Aircraft eng r2800
NSN
2810-00-810-7292
Part Number
168735M20
Description
Valve,poppet,engine
CAGE
98750

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 168735M20 NSN 2810-00-810-7292

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
60.0
WCC:
593
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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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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