Model: 17181P20

Valve Seat

Properties:

Flange Diameter
Between 2.633 inches and 2.653 inches
Body Outside Diameter
Between 2.733 inches and 2.777 inches
Body Inside Diameter
Between 2.182 inches and 2.192 inches
Flange Seat To Disk End Height
Between 0.436 inches and 0.438 inches
Under Flange Height
Between 0.136 inches and 0.144 inches
Seat Angle In Deg
45.000
Hardness Rating
90.0 rockwell b and 105.0 rockwell b
Seating Surface Shape
Angular
Material
Steel
Material Specification
Ams 5700 assn standard single material response
Style Designator
Plain flanged
Fsc Application Data
Aircraft eng r1830
NSN
4820-00-344-1449
Part Number
17181P20
Description
Seat,valve
CAGE
77445

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 17181P20 NSN 4820-00-344-1449

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:
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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