204-061-689-001

View detailed technical data, stock status, and sourcing information for: 204-061-689-001
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-482-5748

Item Name Code

05488

Assigment Date

01/01/1961 (65 years ago)

right-hand 1st end thread direction, 160.0 fahrenheit single response maximum operating temp, poppet flow control device, 3a 1st end thread class, spring disk loading method

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 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 160.0 fahrenheit single response
End Item Identification: helicopter: iroquois uh-1, utility/search and recovery uh-1n
Connection Style: flared (tube) 1st end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Thread Quantity Per Inch: 18 1st end
Nominal Thread Size: 0.562 inches 1st end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.375 inches 1st end
Style Designator: straight thru
Thread Series Designator: unf 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2915-00-913-6163	No Name Available	05/18/1966

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
204-061-689-001	Safety Relief Valve
204-061-689-1	Safety Relief Valve
42C42604	Safety Relief Valve
P13-262-0.1	Safety Relief Valve
P13-262-1	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-482-5748?

The FSCG of the NSN 4820-00-482-5748 is 4820

Does the NSN 4820-00-482-5748 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-482-5748 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 4820-00-482-5748 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-482-5748 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 4820-00-482-5748 was assigned to the Federal Catalog?

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