N13351

Valve Seat

This page provides complete and verified information for part number N13351, NSN 4820-01-121-1939

You’ll find detailed technical specifications, product attributes, condition classification, and real-time stock availability. All data is based on official records and meets industry standards for defense, aerospace, and industrial sourcing. Whether you’re performing a parts audit, validating compliance, or preparing a purchase order, this part listing supports accurate and efficient procurement.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-121-1939

Item Name Code

22113

Assigment Date

10/31/1981 (44 years ago)

A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes:shaft(1), straight; and axle(1), straight.

0.500 inches nominal body outside diameter, 0.690 inches nominal flange diameter, copper alloy overall material, 0.225 inches nominal body inside diameter, flat seating surface shape

Characteristics

Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.

Flange Diameter: 0.690 inches nominal
Body Outside Diameter: 0.500 inches nominal
Body Inside Diameter: 0.225 inches nominal
Seating Surface Shape: flat
Material: copper alloy overall

Classification Data

Detailed NSN information including identification codes, classification data, and key indicators used for cataloging, logistics, and supply management.

Type of Item Identification
Demilitarization
Criticality
Federal Item Identification Guide
Precious Metals Indicator
Pseudo Item Name Code
Hazardous Material Indicator
Schedule B Code

Freight Information

Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.

Major Organizational Entity
National Motor Freight Classification Item Number
National Motor Freight Classification Sub-Item Number
Uniform Freight Classification Item Number
National Motor Freight Class Rating
Water Commodity
Type of Cargo
Special Hand
Air Dimension
Air Commodity
National Motor Freight Description

FAQs

Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for N13351

What is the FSCG of the NSN 4820-01-121-1939?

The FSCG of the NSN 4820-01-121-1939 is 4820

Does the NSN 4820-01-121-1939 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-121-1939 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 4820-01-121-1939 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-121-1939 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 4820-01-121-1939 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Sat, Oct 31, 1981