4H9976

View detailed technical data, stock status, and sourcing information for: 4H9976
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-580-8952

Item Name Code

04522

Assigment Date

01/01/1963 (63 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.

6.562 inches nominal overall width, 0.406 inches nominal hole diameter, 0.438 inches nominal outside corner radius, solid single or composition cross-sectional shape style, 41.500 inches nominal overall length

Product Characteristics

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

Cross-Sectional Shape Style: solid single or composition
Hole Diameter: 0.406 inches nominal
Overall Length: 41.500 inches nominal
Overall Width: 6.562 inches nominal
Outside Corner Radius: 0.438 inches nominal
Aperture Width: 4.812 inches nominal
Aperture Length: 39.375 inches nominal
Center To Center Distance Between Bolt Holes Along Width: 2.812 inches nominal
Outside Edge To Bolt Hole Center Distance Along Width: 0.438 inches nominal
Outside Edge To Bolt Hole Center Distance Along Length: 0.438 inches nominal
Cross-Sectional Thickness: 0.062 inches nominal
Material: cellulose overall

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
4H9976	Gasket
6N4927	Gasket

FAQs

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

What is the FSCG of the NSN 5330-00-580-8952?

The FSCG of the NSN 5330-00-580-8952 is 5330

Does the NSN 5330-00-580-8952 have a Schedule B code assigned?

Yes, the Schedule B code is 8487900080

Does NSN 5330-00-580-8952 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 5330-00-580-8952 contain precious materials?

Precious metal content is unknown

Does NSN 5330-00-580-8952 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5330-00-580-8952 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963