Model: HM20853AS

Engine Poppet Valve Tappet

Properties:

Casehardening Indicator
Casehardened
Concentric Hole Depth
2.000 inches
Concentric Hole Diameter
0.312 inches
Overall Length
Between 2.466 inches and 2.486 inches
Body Outside Diameter
Between 0.6235 inches and 0.6240 inches
Flats Length
0.031 inches
Size Designation
Standard
Casehardened Location
Head
Material And Location
Steel, qq-s-624, fs5120,
Adjustability
Adjustable
Operation Method
Mechanical
Width Across Flats
Between 0.490 inches and 0.500 inches
Metallic Hardness Rating And Location
58.0 rockwell c
Adjusting Device
Included
Cam End Diameter
Between 1.365 inches and 1.375 inches
Crown Height
Between 0.003 inches and 0.005 inches
Cam End Height
Between 0.115 inches and 0.125 inches
Fsc Application Data
Engine, gasoline, nonaircraft
NSN
2805-00-387-1029
Part Number
HM20853AS
Description
Tappet,engine Poppet Valve
CAGE
89749

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 HM20853AS NSN 2805-00-387-1029

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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