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Valve Seat NSN 4820-00-825-1991

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 4820-00-825-1991 NSN: 4820-00-825-1991

Features and Characteristics

Thread Class
2a single threaded portion
Thread Length
0.344 inches single threaded portion
Flange Diameter
Between 2.115 inches and 2.120 inches
Body Outside Diameter
Between 1.932 inches and 1.937 inches
Body Inside Diameter
0.312 inches
Flange Seat To Disk End Height
0.188 inches
Under Flange Height
0.188 inches
Thread Size
0.312 inches single threaded portion
Seating Surface Shape
Flat
Material
Steel
Material Specification
Qq-s-763 federal specification single material response
Style Designator
Plain flanged
Thread Series Designator
Unf single threaded portion
FSC
4820 Nonpowered Valves
NIIN
008251991
NSN
4820008251991

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
186311PC120
Cage Code:
88032
Status:
A
MSDS:
Part Number:
186290PC120
Cage Code:
0AT62
Status:
A
MSDS:
Part Number:
184450PC120
Cage Code:
0AT62
Status:
A
MSDS:
Part Number:
CMK17K5N
Cage Code:
0AT62
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 4820-00-825-1991
What are the manufacturers of nsn 4820008251991?
Does this nsn 4820008251991 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820008251991
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 4820008251991 contain any precious metals?
No precious metal content.
Does nsn 4820008251991 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820008251991?
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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  •   Quality Inspected Parts
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