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 
Hungary 
Poland 
Slovakia 
Brazil 
Spain 
Columbia 
Israel 
Singapore 
Kuwait 
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Belgium 
Canada 
New Zealand 
France 
Germany 
Republic of Korea 
United Kingdom 
Netherlands 
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Italy 
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Greece 
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 6240-01-152-2662
NSN 6145-01-119-9040
NSN 5950-01-525-1128
NSN 5945-01-064-3226
NSN 5960-01-450-4693
NSN 5905-00-491-7524
NSN 5935-01-421-9594
NSN 5855-00-014-5008
NSN 5835-01-060-9491
NSN 5960-01-533-5162
NSN 6240-01-279-3614
NSN 6135-01-142-6456