Model: X-638

Engine Poppet Valve

Properties:

Head Style
Flat
Head Height
0.1406 inches
Chamfer Angle In Deg
45.0
Chamfer Length
0.0312 inches
Slot Length
Between 0.3300 inches and 0.3380 inches
Outside Diameter
1.6250 inches
Seat Angle In Deg
25.0
Stem Style
Slotted
Carbon Relief Groove
Not included
Neck Radius
0.2500 inches
Stem Length
5.1094 inches
Stem Diameter
0.3730 inches
Distance From Slot To Stem End
0.1094 inches
Slot Radius
Between 0.0790 inches and 0.0810 inches
Material And Location
Steel, federal standard 66, aisi/sae 3140 stem
Metallic Hardness Rating And Location
50.0 shore scleroscope tip
NSN
2805-00-354-2036
Part Number
X-638
Description
Valve,poppet,engine
CAGE

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 X-638 NSN 2805-00-354-2036

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

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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