4820-00-375-8370

Find complete technical information, availability, and procurement data for: 4820-00-375-8370
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-375-8370

Item Name Code

22113

Assigment Date

01/01/1963 (63 years ago)

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.

0.968 inches nominal under flange height, 0.562 inches nominal single threaded portion thread length, 0.783 inches nominal flange diameter, 2a single threaded portion thread class, 0.312 inches nominal flange seat to disk end height

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2a single threaded portion
Thread Length: 0.562 inches nominal single threaded portion
Flange Diameter: 0.783 inches nominal
Flange Seat To Disk End Height: 0.312 inches nominal
Under Flange Height: 0.968 inches nominal
Nominal Thread Size: 0.625 inches single threaded portion
Seating Surface Shape: flat
Body Stepped Inside Diameter: 0.325 inches nominal second step
Body Stepped Inside Diameter: 0.435 inches nominal first step
Material: steel overall
Style Designator: threaded flanged
Thread Series Designator: unf single threaded portion

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
4700-3112615PC548345	Valve Seat
548345	Valve Seat
821144PCALL	Valve Seat

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-375-8370?

The FSCG of the NSN 4820-00-375-8370 is 4820

Does the NSN 4820-00-375-8370 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-375-8370 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4820-00-375-8370 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-375-8370 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4820-00-375-8370 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963