Valve Seat NSN 4820-01-254-2983

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: 4820-01-254-2983

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Features and Characteristics

Flange Diameter

0.486 inches

Body Outside Diameter

0.486 inches

Body Inside Diameter

0.200 inches

End Application

B-1b aircraft

Flange Seat To Disk End Height

0.080 inches

Under Flange Height

0.230 inches

Seat Angle In Deg

30.000

Hardness Rating

56.0 rockwell c and 60.0 rockwell c

Seating Surface Shape

Angular

Material

Steel comp 440a

Material Specification

Qq-s-763 federal specification single material response

Surface Treatment

Phosphate

Surface Treatment Specification

Mil-s-5002 military specification single treatment response

Style Designator

Plain flanged

Fsc Application Data

Aircraft hydraulic vacuum deicing systems

FSC

4820 Nonpowered Valves

NIIN

012542983

NSN

4820012542983

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

T21486-1

Cage Code:

99167

Status:

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 4820-01-254-2983

What are the manufacturers of nsn 4820012542983?

Hamilton Sundstrand Corporation (99167)

Does this nsn 4820012542983 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820012542983
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 4820012542983 contain any precious metals?
No precious metal content.

Does nsn 4820012542983 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820012542983?
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:

Cond. Code:

Status:

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On Time Delivery
Certificate of Conformance
Quality Inspected Parts
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