DWG. NO 77-1017-1

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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

4520-01-308-6538

Item Name Code

07531

Assigment Date

10/03/1989 (36 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.

item is rated a 14.4kw power source,440 volts,60 hz 3 phase special features

Product Characteristics

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

Special Features: item is rated a 14.4kw power source,440 volts,60 hz 3 phase

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
3257161	Duct Type Ventilation Heater
DWG. NO 77-1017-1	Duct Type Ventilation Heater
VDH 14X22-2(414.4-3)18-(SP)	Duct Type Ventilation Heater

FAQs

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

What is the FSCG of the NSN 4520-01-308-6538?

The FSCG of the NSN 4520-01-308-6538 is 4520

Does the NSN 4520-01-308-6538 have a Schedule B code assigned?

Yes, the Schedule B code is 7322900000

Does NSN 4520-01-308-6538 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 4520-01-308-6538 contain precious materials?

Item does not contain precious metal.

Does NSN 4520-01-308-6538 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 4520-01-308-6538 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Tue, Oct 3, 1989