Model: A171680

Engine Poppet Valve

Properties:

Head Style
Flat
Head Height
Between 0.1875 inches and 0.1975 inches
Chamfer Angle In Deg
45.0
Chamfer Length
0.0312 inches
Slot Width
Between 0.0790 inches and 0.0810 inches
Slot Length
Between 0.3300 inches and 0.3380 inches
Outside Diameter
Between 1.6875 inches and 1.6975 inches
Seat Angle In Deg
45.0
Stem Style
Slotted
Carbon Relief Groove
Not included
Neck Radius
0.4375 inches
Stem Length
5.0312 inches
Stem Diameter
Between 0.3720 inches and 0.3730 inches
Distance From Slot To Stem End
Between 0.1063 inches and 0.1093 inches
Slot Radius
Between 0.0790 inches and 0.0810 inches
Material And Location
Steel, federal standard 66, aisi/sae 3140
NSN
2805-00-517-1680
Part Number
A171680
Description
Valve,poppet,engine
CAGE
19207

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 A171680 NSN 2805-00-517-1680

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:
--
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

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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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