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Valve Seat NSN 4820-00-858-9981

Item Description

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.

NSN 4820-00-858-9981 NSN: 4820-00-858-9981

Features and Characteristics

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
FSC
4820 Nonpowered Valves
NIIN
008589981
NSN
4820008589981

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
1608397-1
Cage Code:
99251
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481909090
  • NAICS: 332911
  • SITC: 74790
  • Description: Parts of taps, cocks, valves and similar appliances, nesoi
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-00-858-9981
What are the manufacturers of nsn 4820008589981?
Does this nsn 4820008589981 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820008589981
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.
Does nsn 4820008589981 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820008589981 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820008589981?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22113
FIIG:
A15500
App. Key:
A
Cond. Code:
2
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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