Model: 1608397-1

Valve Seat

Properties:

Thread Class
3a single threaded portion
Thread Length
0.187 inches single threaded portion
Flange Diameter
Between 0.254 inches and 0.256 inches
Body Inside Diameter
Between 0.076 inches and 0.080 inches
Seat Radius
0.016 inches
Flange Seat To Disk End Height
0.073 inches
Under Flange Height
0.286 inches
Thready Qty Per Inch (tpi)
32 single threaded portion
Thread Size
0.250 inches single threaded portion
Seating Surface Shape
Radial
Material
Aluminum alloy 2024
Style Designator
Plain flanged
Thread Series Designator
Unef single threaded portion
NSN
4820-00-858-9981
Part Number
1608397-1
Description
Seat,valve
CAGE
99251

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 1608397-1 NSN 4820-00-858-9981

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

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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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