2640-676X1PC4

View detailed technical data, stock status, and sourcing information for: 2640-676X1PC4
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-878-0703

Item Name Code

32559

Assigment Date

01/01/1960 (66 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.

straight port configuration, 2 port quantity, 0.812 inches nominal port diameter, 2.871 inches minimum and 2.873 inches maximum spherical diameter, 1 stem accommodation quantity

Product Characteristics

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

Spherical Diameter: 2.871 inches minimum and 2.873 inches maximum
Port Quantity: 2
Port Diameter: 0.812 inches nominal
Stem Accommodation Quantity: 1
Port Configuration: straight
Material: steel comp 316
Surface Treatment: plastic polytetrafluoroethylene

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
2640-676X1PC4	Ported Valve Ball
C20-05223	Ported Valve Ball

FAQs

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

What is the FSCG of the NSN 4820-00-878-0703?

The FSCG of the NSN 4820-00-878-0703 is 4820

Does the NSN 4820-00-878-0703 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-878-0703 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 4820-00-878-0703 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-878-0703 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 4820-00-878-0703 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960