Model: D20903PC4

Valve Seat

Special Features:

Hex shaped flange

Properties:

Thread Class
2a single threaded portion
Thread Length
0.312 inches single threaded portion
Flange Diameter
0.750 inches
Body Inside Diameter
Between 0.281 inches and 0.375 inches
Flange Seat To Disk End Height
Between 0.185 inches and 0.191 inches
Under Flange Height
0.312 inches
Thready Qty Per Inch (tpi)
20 single threaded portion
Hardness Rating
300.0 brinell standard
Thread Size
0.562 inches single threaded portion
Seating Surface Shape
Angular
Material
Steel
Style Designator
Threaded flanged
Thread Series Designator
Un single threaded portion
NSN
4810-00-338-3063
Part Number
D20903PC4
Description
Seat,valve
CAGE
66850

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 D20903PC4 NSN 4810-00-338-3063

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:
052190
UFC:
30000
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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