4820-01-018-3978

Find complete technical information, availability, and procurement data for: 4820-01-018-3978
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-018-3978

Item Name Code

22113

Assigment Date

03/25/1976 (50 years ago)

2a first threaded portion thread class, 1.000 inches nominal second threaded portion thread length, 5.500 inches nominal overall height, 0.531 inches nominal first threaded portion thread length, 2a second 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: 2a first threaded portion
Thread Class: 2a second threaded portion
Thread Length: 0.531 inches nominal first threaded portion
Thread Length: 1.000 inches nominal second threaded portion
Overall Height: 5.500 inches nominal
Body Inside Diameter: 3.000 inches nominal
Seat Angle In Deg: 45.000 nominal
Seal Accommodation Type: grooved
Thread Quantity Per Inch: 14 second threaded portion
Thread Quantity Per Inch: 16 first threaded portion
Nominal Thread Size: 2.250 inches first threaded portion
Nominal Thread Size: 3.375 inches second threaded portion
Seating Surface Shape: angular
Material: copper alloy overall
Material Document And Classification: qq-n-288 fed spec single material response overall
Style Designator: double flanged
Thread Series Designator: un first threaded portion
Thread Series Designator: uns second 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
009-500-0378	Valve Seat
NMP-1122	Valve Seat
NMP1122PC27	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-018-3978?

The FSCG of the NSN 4820-01-018-3978 is 4820

Does the NSN 4820-01-018-3978 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-018-3978 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 4820-01-018-3978 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-018-3978 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 4820-01-018-3978 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Thu, Mar 25, 1976