40403-2 FIND NO. 13

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-475-9926

Item Name Code

35917

Assigment Date

06/21/2000 (26 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.

trac style h valve model number for which designed, nha nsn 4820-01-475-9686 valve, regulating, fluid pressure end item identification, 2.500 inches valve size for which designed, 55378 valve design control activity, copper alloy material

Product Characteristics

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

End Item Identification: nha nsn 4820-01-475-9686 valve, regulating, fluid pressure
Valve Size For Which Designed: 2.500 inches
Valve Design Control Activity: 55378
Valve Model Number For Which Designed: trac style h
Material: copper alloy
Material Document And Classification: qq-b-626 fed spec single material response

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
40403-2 FIND NO. 13	Valve Disk Retainer
713-01	Valve Disk Retainer

FAQs

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

What is the FSCG of the NSN 4820-01-475-9926?

The FSCG of the NSN 4820-01-475-9926 is 4820

Does the NSN 4820-01-475-9926 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-475-9926 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 4820-01-475-9926 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-475-9926 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 4820-01-475-9926 was assigned to the Federal Catalog?

It was assigned 26 years ago, on Wed, Jun 21, 2000