Model: I18-1856B

Engine Poppet Valve Tappet

Properties:

Casehardening Indicator
Not casehardened
Concentric Hole Depth
Between 1.709 inches and 1.791 inches
Counterbore Diameter
0.843 inches
Counterbore Depth
Between 1.496 inches and 1.526 inches
Concentric Hole Diameter
Between 0.688 inches and 0.750 inches
Overall Length
Between 2.490 inches and 2.510 inches
Size Designation
Standard
Material And Location
Iron, cast
Adjustability
Nonadjustable
Operation Method
Mechanical
Metallic Hardness Rating And Location
52.0 rockwell c face
Cam End Diameter
Between 0.996 inches and 0.997 inches
Body Hole Diameter
0.250 inches
Distance From Body Hole Center To Cam End
0.625 inches
Style Designator
Counterbored push rod end
NSN
2805-00-374-9443
Part Number
I18-1856B
Description
Tappet,engine Poppet Valve
CAGE
71772

A cylindrically shaped metal item designed to transmit intermittent motion from the cam lobe on a shaft or cam ring, to the engine poppet valve. It may be mechanically or hydraulically operating, and may include adjusting devices.

Part I18-1856B NSN 2805-00-374-9443

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22199
FIIG:
T267-F
Concept No.:
App. Key:
FA
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

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Schedule B and Export
  • Schedule B: 8481909090
  • SITC: 74790
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Parts of taps, cocks, valves and similar appliances, nesoi

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