Model: 170291

Engine Poppet Valve

Properties:

Head Style
Mushroom
Head Height
0.4750 inches
Chamfer Angle In Deg
45.0
Groove Diameter
0.6350 inches
Chamfer Length
0.0200 inches
Groove Width
0.2840 inches
Outside Diameter
3.3000 inches
Seat Angle In Deg
37.0
Stem Style
Grooved
Carbon Relief Groove
Not included
Neck Radius
0.7200 inches
Stem Length
Between 5.4260 inches and 5.4360 inches
Stem Diameter
Between 0.7455 inches and 0.7460 inches
Distance From Groove To Stem End
0.0900 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
Gasoline engine aircraft
NSN
2810-00-505-9087
Part Number
170291
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 170291 NSN 2810-00-505-9087

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:
133300
UFC:
63220
LTL:
RATING VARIABLE
LCL:
85.0
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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