Model: 18012A

Engine Poppet Valve

Properties:

Head Style
Concave
Head Height
0.1690 inches
Chamfer Angle In Deg
45.0
Chamfer Length
0.0312 inches
Outside Diameter
2.0625 inches
Seat Angle In Deg
30.0
Stem Style
Double grooved
Carbon Relief Groove
Not included
Neck Radius
0.5000 inches
Stem Length
5.7500 inches
Stem Diameter
Between 0.3720 inches and 0.3730 inches
Distance From First Groove To Stem End
0.2812 inches
Distance From Second Groove To Stem End
Between 0.4360 inches and 0.4380 inches
First Groove Diameter
Between 0.3010 inches and 0.3070 inches
Second Groove Diameter
Between 0.3010 inches and 0.3070 inches
First Groove Width
Between 0.0600 inches and 0.0640 inches
Second Groove Width
0.0600 mils and 0.0640 centimeters
Material And Location
Steel, federal standard 66, aisi/sae 3140
Metallic Hardness Rating And Location
37.0 rockwell c tip
Fsc Application Data
Gasoline engine
NSN
2805-00-271-9073
Part Number
18012A
Description
Valve,poppet,engine
CAGE
1ML14

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 18012A NSN 2805-00-271-9073

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: 8409918000
  • SITC: 71391
  • End Use: Industrial engines
  • NAICS: 333618
  • USDA: 1

Freight Class: Parts for spark-ignition internal combustion piston engines, nesoi

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