Model: BK183A1371

Valve Seat

Properties:

Flange Diameter
Between 4.309 inches and 4.315 inches
Body Outside Diameter
Between 3.118 inches and 3.121 inches
Body Inside Diameter
Between 2.000 inches and 2.002 inches
Flange Seat To Disk End Height
0.469 inches
Under Flange Height
0.812 inches
Seat Angle In Deg
45.000
Seating Surface Shape
Angular
Material
Steel
Material Specification
Fed standard 66, aisi 416/sae 51416 federal standard single material response
Style Designator
Plain flanged
NSN
4820-00-057-2106
Part Number
BK183A1371
Description
Seat,valve
CAGE
0BR59

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 BK183A1371 NSN 4820-00-057-2106

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:
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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