ES9998-04

View detailed technical data, stock status, and sourcing information for: ES9998-04
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-418-9539

Item Name Code

05488

Assigment Date

09/08/1995 (30 years ago)

A device for connecting the ends of two shafts so that rotary motion of one shaft is transmitted to the other shaft. It is constructed to allow for slight misalignment of shafts both linear and angular.

3a 1st end thread class, -70.0 fahrenheit minimum operating temp, poppet flow control device, right-hand 1st end thread direction, 260.0 fahrenheit single response maximum operating temp

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
Maximum Operating Temp: 260.0 fahrenheit single response
Minimum Operating Temp: -70.0 fahrenheit
End Item Identification: aircraf, hercules c-130
Connection Style: flared (tube) 1st end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Adjustable Pressure Range: +99.8 to 110.3 pounds per square inch
Maximum Operating Pressure: 115.5 pounds per square inch single response
Nominal Thread Size: 0.438 inches 1st end
Seat Angle: 37.0 degrees 1st end
Material: steel comp 303 body
Material: steel comp 303 flow control device
Media For Which Designed: air 1st response
Media For Which Designed: water, fresh 2nd response
Style Designator: straight thru w/baffle
Thread Series Designator: unjf 1st end

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
ES9998-04	Safety Relief Valve
RV05-424	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-418-9539?

The FSCG of the NSN 4820-01-418-9539 is 4820

Does the NSN 4820-01-418-9539 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-418-9539 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 4820-01-418-9539 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-418-9539 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 4820-01-418-9539 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Fri, Sep 8, 1995