Model: 640-54PC76

Valve Seat

Properties:

Flange Diameter
2.750 inches
Flange Seat To Disk End Height
0.625 inches
Under Flange Height
2.563 inches
Seat Angle In Deg
30.000
Hardness Rating
125.0 brinell standard body and 150.0 brinell standard body
Seating Surface Shape
Angular
Material
Nickel alloy body
NSN
4820-00-390-3763
Part Number
640-54PC76
Description
Seat,valve
CAGE
72957

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 640-54PC76 NSN 4820-00-390-3763

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:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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