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.
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Austria 
Finland 
Lithuania 
Poland 
Romania 
Slovakia 
Bulgaria 
Czech Republic 
Brazil 
Spain 
Columbia 
Israel 
Argentina 
Singapore 
Kuwait 
Morocco 
Saudi Arabia 
Malaysia 
Thailand 
Australia 
Belgium 
Canada 
New Zealand 
France 
Germany 
Republic of Korea 
United Kingdom 
Netherlands 
Portugal 
Italy 
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 6650-00-255-8269
NSN 6150-00-672-2880
NSN 5945-00-729-2622
NSN 6130-01-044-5436
NSN 6645-00-955-7997
NSN 6620-01-244-0260
NSN 6320-01-281-6028
NSN 5996-00-289-9847
NSN 6240-01-659-5998
NSN 5855-01-494-3713
NSN 6610-01-128-2428
NSN 5855-01-644-0445