4820-01-474-4181

Find complete technical information, availability, and procurement data for: 4820-01-474-4181
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-474-4181

Item Name Code

27565

Assigment Date

05/03/2000 (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.

material will be in accordance with navicp activity hx quality control, manufacturing and testing specifications reference number differentiating characteristics, zzzy criticality code justification

Product Characteristics

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

Criticality Code Justification: zzzy
Reference Number Differentiating Characteristics: material will be in accordance with navicp activity hx quality control, manufacturing and testing specifications

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
284661-036F	Fluid Pressure Regulating Valve
284872-0001	Fluid Pressure Regulating Valve

FAQs

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

What is the FSCG of the NSN 4820-01-474-4181?

The FSCG of the NSN 4820-01-474-4181 is 4820

Does the NSN 4820-01-474-4181 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809015

Does NSN 4820-01-474-4181 require demilitarization?

Usml or ccl military items - demil required. Item managers,, equipment specialists, or product specialists must furnish special demilinstructions. (note 3).

Does NSN 4820-01-474-4181 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-474-4181 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 4820-01-474-4181 was assigned to the Federal Catalog?

It was assigned 26 years ago, on Wed, May 3, 2000