NW-891

View detailed technical data, stock status, and sourcing information for: NW-891
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-058-2278

Item Name Code

15933

Assigment Date

06/06/1967 (59 years ago)

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes:washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

0.580 inches nominal outside diameter, plastic polyimide overall material, 0.191 inches nominal hole diameter, 82.0 degrees nominal recess angle, 0.152 inches nominal material thickness

Product Characteristics

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

Hole Diameter: 0.191 inches nominal
Outside Diameter: 0.580 inches nominal
Material Thickness: 0.152 inches nominal
Recess Angle: 82.0 degrees nominal
Material: plastic polyimide overall
Style Designator: recessed

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-165-1815	No Name Available	09/01/1984

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
99503274	Recessed Washer
FW10	Recessed Washer
FW10NATURAL	Recessed Washer
FWNY-195NA	Recessed Washer
NW-891	Recessed Washer
R2763P1	Recessed Washer

FAQs

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

What is the FSCG of the NSN 5310-00-058-2278?

The FSCG of the NSN 5310-00-058-2278 is 5310

Does the NSN 5310-00-058-2278 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5310-00-058-2278 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 5310-00-058-2278 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-058-2278 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 5310-00-058-2278 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Tue, Jun 6, 1967