Model: 57-837

Valve Seat

Properties:

Flange Diameter
0.341 inches
Body Outside Diameter
0.191 inches
Body Inside Diameter
0.068 inches
Flange Seat To Disk End Height
0.050 inches
Under Flange Height
0.043 inches
Seat Angle In Deg
45.000
Seating Surface Shape
Angular
Material
Steel
Material Specification
Mamil-s-7720 military specification single material response
Surface Treatment
Passivate
Style Designator
Plain flanged
NSN
4820-00-703-2424
Part Number
57-837
Description
Seat,valve
CAGE
01359

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 57-837 NSN 4820-00-703-2424

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:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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