803-4384536-56B-89

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-506-1885

Item Name Code

28686

Assigment Date

03/25/2003 (23 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.

0.874 inches nominal largest outside diameter, 5.9688 inches nominal overall length, 1.000 inches valve size for which designed, 1 inch in-line stop valve end item identification, threaded externally stem actuating end type

Product Characteristics

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

Overall Length: 5.9688 inches nominal
End Item Identification: 1 inch in-line stop valve
Largest Outside Diameter: 0.874 inches nominal
Valve Size For Which Designed: 1.000 inches
Stem Actuating End Type: threaded externally
Special Features: name assigned by controlling agency is stem (stop)
Material: nickel alloy
Material Document And Classification: astm b164 assn std 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
803-4384536-56B-89	Needle Valve Stem

FAQs

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

What is the FSCG of the NSN 4820-01-506-1885?

The FSCG of the NSN 4820-01-506-1885 is 4820

Does the NSN 4820-01-506-1885 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-506-1885 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 4820-01-506-1885 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-506-1885 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 4820-01-506-1885 was assigned to the Federal Catalog?

It was assigned 23 years ago, on Tue, Mar 25, 2003