Valve Seat NSN 4820-01-256-4879

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: 4820-01-256-4879

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Features and Characteristics

Thread Class

3b single threaded portion

Thread Length

0.875 inches single threaded portion

Flange Diameter

4.375 inches

Body Inside Diameter

3.875 inches

Flange Seat To Disk End Height

0.312 inches

Under Flange Height

1.000 inches

Thready Qty Per Inch (tpi)

14 single threaded portion

Thread Size

4.250 inches single threaded portion

Seating Surface Shape

Flat

Material

Copper alloy body

Style Designator

Threaded flanged

Thread Series Designator

Un single threaded portion

FSC

4820 Nonpowered Valves

NIIN

012564879

NSN

4820012564879

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

801-01

Cage Code:

55378

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 4820-01-256-4879

What are the manufacturers of nsn 4820012564879?

Trac Regulators Inc (55378)

Does this nsn 4820012564879 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820012564879
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 4820012564879 contain any precious metals?
No precious metal content.

Does nsn 4820012564879 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820012564879?
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
Quality Fast Service