Model: 20A12225

Valve Seat

Special Features:

0.922 in. Min, 0.940 in. Max w across hexagonal flats

Properties:

Thread Class
3a single threaded portion
Thread Length
0.166 inches single threaded portion and 0.174 inches single threaded portion
Flange Diameter
Between 0.922 inches and 0.940 inches
Body Inside Diameter
0.400 inches
Flange Seat To Disk End Height
0.230 mils and 0.290 centimeters
Under Flange Height
0.390 inches
Seat Angle In Deg
15.000
Thread Size
0.562 inches single threaded portion
Seating Surface Shape
Angular
Material
Steel
Style Designator
Threaded flanged
Thread Series Designator
Unf single threaded portion
NSN
4820-00-340-7122
Part Number
20A12225
Description
Seat,valve
CAGE

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 20A12225 NSN 4820-00-340-7122

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:
A
ESD:
ESD:
MMAC:
RU
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
60.0
WCC:
594
TCC:
Z
SHC:
Z
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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