4820-01-139-9886

Find complete technical information, availability, and procurement data for: 4820-01-139-9886
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-139-9886

Item Name Code

22113

Assigment Date

10/07/1982 (43 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.

0.125 inches nominal flange seat to disk end height, 2a single threaded portion thread class, 0.218 inches nominal single threaded portion thread length, 1.812 inches nominal flange diameter, 1.250 inches nominal body inside 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: 2a single threaded portion
Thread Length: 0.218 inches nominal single threaded portion
Flange Diameter: 1.812 inches nominal
Body Inside Diameter: 1.250 inches nominal
Flange Seat To Disk End Height: 0.125 inches nominal
Under Flange Height: 0.500 inches nominal
Thread Quantity Per Inch: 14 single threaded portion
Nominal Thread Size: 1.625 inches single threaded portion
Seating Surface Shape: flat
Material: nickel alloy overall
Style Designator: threaded flanged
Thread Series Designator: uns single threaded portion

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-423-1872	No Name Available	02/01/2001

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
22964942	Valve Seat
N-464	Valve Seat
N-464 PART N-464-15	Valve Seat
N-464 PC 15	Valve Seat
N-464-15	Valve Seat
N-498 PIECE 15	Valve Seat
N22964942	Valve Seat
NB22964942	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-139-9886?

The FSCG of the NSN 4820-01-139-9886 is 4820

Does the NSN 4820-01-139-9886 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-139-9886 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 4820-01-139-9886 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-139-9886 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 4820-01-139-9886 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Thu, Oct 7, 1982