Model: 543B

Engine Poppet Valve

Properties:

Head Style
Flat
Head Height
0.1406 inches
Chamfer Angle In Deg
45.0
Groove Diameter
Between 0.2100 inches and 0.2200 inches
Chamfer Length
0.0312 inches
Groove Width
Between 0.1540 inches and 0.1640 inches
Outside Diameter
Between 1.3100 inches and 1.3150 inches
Seat Angle In Deg
44.0
Stem Style
Grooved
Carbon Relief Groove
Not included
Neck Radius
0.3125 inches
Stem Length
Between 5.4340 inches and 5.4400 inches
Stem Diameter
Between 0.3090 inches and 0.3095 inches
Distance From Groove To Stem End
0.2500 inches
Material And Location
Steel sae3140, sae1050 or sae4140, stem
Material And Location
Steel, federal standard 66, sae ev3 head
Material And Location
Steel, federal standard 66, sae vf2 seat face
Metallic Hardness Rating And Location
45.0 rockwell c tip
Fsc Application Data
Gasoline engine
NSN
2805-00-528-6380
Part Number
543B
Description
Valve,poppet,engine
CAGE
44940

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 543B NSN 2805-00-528-6380

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:
--
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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