4820-00-904-3487

Find complete technical information, availability, and procurement data for: 4820-00-904-3487
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-904-3487

Item Name Code

27565

Assigment Date

06/17/1966 (60 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

threaded internal boss first end connection type, air and helium and nitrogen, gaseous media for which designed, automatic relief valve furnished items, straight thru body style, gasket seal first end style designator

Product Characteristics

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

Body Style: straight thru
Furnished Items: automatic relief valve
Media For Which Designed: air and helium and nitrogen, gaseous
First End Connection Type: threaded internal boss
First End Style Designator: gasket seal
First End Thread Size And Series/Type Designator: unable to decode
First End Thread Class: 3b
First End Thread Direction: right-hand
Second End Relationship With First End: identical
Packing Material: unable to decode
Flow Control Device: poppet
Flow Control Device Material: unable to decode
End Connection Quantity: 2
Renewable Seat Ring Type: pressed-in
Mounting Facility: bracket
Outlet Pressure Range: +0.0 to 1500.0 pounds per square inch
Regulation Type: automatic double stage
Valve Stem Design: double seat
Valve Loading Method: spring
Remote Actuation Method: diaphragm
Maximum Inlet Pressure Rating: 6000.0 pounds per square inch
Filter: included
Temp Rating: -40.0 fahrenheit minimum and 160.0 fahrenheit maximum
Special Features: 10.0 micron,smallest size particle filtered
Material: unable to decode
Material Document And Classification: unable to decode
Surface Treatment: passivate outside

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
1341-9T	Fluid Pressure Regulating Valve

FAQs

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

What is the FSCG of the NSN 4820-00-904-3487?

The FSCG of the NSN 4820-00-904-3487 is 4820

Does the NSN 4820-00-904-3487 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809015

Does NSN 4820-00-904-3487 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 4820-00-904-3487 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-904-3487 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 4820-00-904-3487 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, Jun 17, 1966