4820-00-375-8371

Find complete technical information, availability, and procurement data for: 4820-00-375-8371
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-375-8371

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.

0.540 inches nominal single threaded portion thread length, 3a single threaded portion thread class, 0.435 inches nominal body inside diameter, 0.312 inches nominal flange seat to disk end height, 1.000 inches nominal flange diameter

Product Characteristics

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

Thread Class: 3a single threaded portion
Thread Length: 0.540 inches nominal single threaded portion
Flange Diameter: 1.000 inches nominal
Body Inside Diameter: 0.435 inches nominal
Flange Seat To Disk End Height: 0.312 inches nominal
Under Flange Height: 0.653 inches nominal
Seal Accommodation Type: grooved
Nominal Thread Size: 0.625 inches single threaded portion
Seating Surface Shape: flat
Special Features: flange end slotted
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
4700-3112615PC548346	Valve Seat
4700-3130474PCALL	Valve Seat
547820PC548346	Valve Seat
548346	Valve Seat
548346PCALL	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-375-8371?

The FSCG of the NSN 4820-00-375-8371 is 4820

Does the NSN 4820-00-375-8371 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-375-8371 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 4820-00-375-8371 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-375-8371 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 4820-00-375-8371 was assigned to the Federal Catalog?

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