Model: A978S

Engine Poppet Valve

Properties:

Head Style
Flat
Head Height
0.1875 inches
Chamfer Angle In Deg
30.0
Chamfer Length
0.0625 inches
Outside Diameter
1.2500 inches
Seat Angle In Deg
45.0
Stem Style
Double grooved
Carbon Relief Groove
Not included
Neck Radius
0.3125 inches
Stem Length
4.6775 inches
Stem Diameter
0.3125 inches
Distance From First Groove To Stem End
0.2500 inches
Distance From Second Groove To Stem End
3.4440 inches
First Groove Diameter
0.2530 inches
Second Groove Diameter
0.2890 inches
First Groove Width
0.2650 inches
Second Groove Width
0.3750 inches
Second Groove Width
0.3750 inches
Material And Location
Cobalt alloy seat face
Material And Location
Steel head
Material And Location
Steel stem
Metallic Hardness Rating And Location
Not rated
Fsc Application Data
Gasoline engine
NSN
2805-00-353-7617
Part Number
A978S
Description
Valve,poppet,engine
CAGE
77576

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 A978S NSN 2805-00-353-7617

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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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Phone: +1 470-231-0824
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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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