Model: D20581PC4

Valve Seat

Properties:

Thread Class
2a single threaded portion
Thread Length
0.188 inches single threaded portion
Flange Diameter
0.500 inches
Body Inside Diameter
Between 0.188 inches and 0.250 inches
Flange Seat To Disk End Height
0.125 inches
Under Flange Height
0.188 inches
Seat Angle In Deg
37.000
Hardness Rating
300.0 brinell standard
Thread Size
0.375 inches single threaded portion
Seating Surface Shape
Angular
Material
Steel
Style Designator
Threaded flanged
Thread Series Designator
Unf single threaded portion
Fsc Application Data
Steam trap valve
NSN
4820-00-399-2939
Part Number
D20581PC4
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 D20581PC4 NSN 4820-00-399-2939

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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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