845-4558793ITEM22

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-057-5519

Item Name Code

13393

Assigment Date

03/15/1978 (48 years ago)

An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes:straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.

0.188 inches nominal thickness, 0.656 inches nominal hole diameter, round peripheral shape style, rectangular cross-sectional shape style, round center hole shape style

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: rectangular
Hole Diameter: 0.656 inches nominal
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 0.188 inches nominal
Overall Diameter: 1.120 inches nominal
Material: plastic polyamide (nylon) 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
4558793-22	Flat Washer
56-13-0713	Flat Washer
56-13-0713MF	Flat Washer
845-4558793 ITE	Flat Washer
845-4558793ITEM22	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-01-057-5519?

The FSCG of the NSN 5310-01-057-5519 is 5310

Does the NSN 5310-01-057-5519 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5310-01-057-5519 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 5310-01-057-5519 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-057-5519 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 5310-01-057-5519 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Wed, Mar 15, 1978