4820-01-103-3291

Find complete technical information, availability, and procurement data for: 4820-01-103-3291
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-103-3291

Item Name Code

22113

Assigment Date

11/12/1980 (45 years ago)

A regulator designed to automatically maintain the current and/or voltage output of an engine generator within specified limits, regardless of variation of load or input voltages. May include cutout relay. Does not include items in which regulation is accomplished by transformer action. See also regulator, current and regulator, voltage.

3.719 inches nominal flange diameter, 0.469 inches nominal single threaded portion thread length, 0.250 inches nominal flange seat to disk end height, 2.875 inches nominal body inside diameter, 3a single threaded portion thread class

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: 0.469 inches nominal single threaded portion
Flange Diameter: 3.719 inches nominal
Body Inside Diameter: 2.875 inches nominal
Flange Seat To Disk End Height: 0.250 inches nominal
Under Flange Height: 0.469 inches nominal
Seat Angle In Deg: 15.000 nominal
Thread Quantity Per Inch: 12 single threaded portion
Nominal Thread Size: 3.469 inches single threaded portion
Seating Surface Shape: angular
Special Features: four lugs 0.250 in. w,0.125 in. deep equally spaced
Material: nickel alloy a overall
Material Document And Classification: qq-n-288 fed spec single material response overall
Style Designator: threaded flanged
Thread Series Designator: uns 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
2621-922-02 ITEM 56-3IN	Valve Seat
845-1889553 PIECE 31-3IN	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-103-3291?

The FSCG of the NSN 4820-01-103-3291 is 4820

Does the NSN 4820-01-103-3291 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-103-3291 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 4820-01-103-3291 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-103-3291 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 4820-01-103-3291 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Wed, Nov 12, 1980