X1020

View detailed technical data, stock status, and sourcing information for: X1020
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-274-3646

Item Name Code

16991

Assigment Date

01/01/1961 (65 years ago)

An item that controls the flow of a fluid by rotation of a ported plug within a suitable ported seat. It must not have any lubrication other than from the fluid controlled, nor contain any nonmetallic seal between plug and seat. See also valve, seatless and valve, plug.

right-hand all ends thread direction, plain, optional end (pipe) 2nd end connection style, plain (pipe) 1st end connection style, grumman; a10 aircraft end item identification, two way two port 360 degree plug turn flow style

Product Characteristics

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

Thread Direction: right-hand all ends
Flow Style: two way two port 360 degree plug turn
End Item Identification: grumman; a10 aircraft
Connection Style: plain (pipe) 1st end
Connection Style: plain, optional end (pipe) 2nd end
Valve Operation Method: manual
Connection Type: threaded external pipe 1st end
Connection Type: threaded internal pipe 2nd end
Maximum Operating Pressure: 125.0 pounds per square inch single response
Nominal Thread Size: 0.125 inches all ends
Criticality Code Justification: feat
Special Features: weapon system essential
Material: copper alloy overall
Media For Which Designed: steam single response
Thread Series Designator: npt all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-060-4790	No Name Available	01/31/1969
4820-00-203-3419	No Name Available	01/01/1963
4820-00-273-9677	No Name Available	01/01/1963
4820-00-274-9153	No Name Available	08/01/1976
4820-00-277-1741	No Name Available	02/12/1969
4820-00-277-1762	No Name Available	11/08/1968
4820-00-288-8553	No Name Available	05/17/1988
4820-00-288-8610	No Name Available	08/01/1978
4820-00-897-0974	No Name Available	01/01/1960

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
130CJ	Plug Cock
15-416	Plug Cock
251163	Plug Cock
41-520-01	Plug Cock
44267	Plug Cock
543852	Plug Cock
89-2	Plug Cock
D3733-16	Plug Cock
EN18-61	Plug Cock
X1020	Plug Cock

FAQs

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

What is the FSCG of the NSN 4820-00-274-3646?

The FSCG of the NSN 4820-00-274-3646 is 4820

Does the NSN 4820-00-274-3646 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-274-3646 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 4820-00-274-3646 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-274-3646 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 4820-00-274-3646 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961