4520-01-071-6418

Find complete technical information, availability, and procurement data for: 4520-01-071-6418
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Federal Supply Group

Plumbing, Heating, and Waste Disposal Equipment

Federal Supply Classification

4520 Space and Water Heating Equipment

National Stock Number

4520-01-071-6418

Item Name Code

15646

Assigment Date

02/13/1979 (47 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.

automatic operation method, 5.500 inches nominal overall diameter, inserted center shaft mounting method, 22 sheet metal gage size, 0.060 inches nominal overall thickness

Product Characteristics

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

Overall Diameter: 5.500 inches nominal
Mounting Method: inserted center shaft
Overall Thickness: 0.060 inches nominal
Operation Method: automatic
Sheet Metal Gage Size: 22
Diameter: 5.500 inches
Material: aluminum alloy
Shape: round

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:

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SM-C-890898	Flue Damper

FAQs

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

What is the FSCG of the NSN 4520-01-071-6418?

The FSCG of the NSN 4520-01-071-6418 is 4520

Does NSN 4520-01-071-6418 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 4520-01-071-6418 contain precious materials?

Precious metal content is unknown

Does NSN 4520-01-071-6418 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 4520-01-071-6418 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Tue, Feb 13, 1979