Model: 52-81-103

Valve Seat

Properties:

Overall Height
Between 1.031 inches and 1.046 inches
Body Outside Diameter
Between 0.997 inches and 0.998 inches
Body Inside Diameter
Between 0.804 inches and 0.805 inches
Seal Accommodation Type
Grooved
Hardness Rating
28.0 rockwell c and 32.0 rockwell c
Seating Surface Shape
Flat
Body Stepped Inside Diameter
0.266 inches fifth step
Body Stepped Inside Diameter
0.422 inches fourth step and 0.438 inches fourth step
Body Stepped Inside Diameter
0.437 inches third step
Body Stepped Inside Diameter
0.804 inches second step
Body Stepped Inside Diameter
0.938 inches first step
Material
Steel
Material Specification
Ams5610 cl416 assn standard single material response
NSN
4810-00-898-8599
Part Number
52-81-103
Description
Seat,valve
CAGE
98391

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 52-81-103 NSN 4810-00-898-8599

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
3.7 X 2.5 X 2.5
Paclk Weight:
0.2000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
60.0
WCC:
736
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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