Model: 66720P20

Valve Seat

Properties:

Overall Height
Between 0.383 inches and 0.388 inches
Body Outside Diameter
Between 2.335 inches and 2.336 inches
Body Inside Diameter
Between 1.930 inches and 1.950 inches
Seat Angle In Deg
Between 33.000 and 37.000
Hardness Rating
80.0 rockwell b face and 100.0 rockwell b face
Hardness Rating
80.0 rockwell b body and 100.0 rockwell b body
Seating Surface Shape
Angular
Material
Aluminum alloy
Material Specification
Ams4635 assn standard single material response
Style Designator
Plain
NSN
4820-00-565-3726
Part Number
66720P20
Description
Seat,valve
CAGE
80254

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

Part 66720P20 NSN 4820-00-565-3726

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22113
FIIG:
A15500
Concept No.:
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
133300
UFC:
63220
LTL:
RATING VARIABLE
LCL:
92.5
WCC:
594
TCC:
Z
SHC:
9
ACC:
Equipment for Aircraft

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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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