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 
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Brazil 
Spain 
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Morocco 
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Italy 
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 6620-00-533-0536
NSN 5930-01-295-8555
NSN 5996-00-175-7782
NSN 5985-01-578-5701
NSN 4140-01-326-5730
NSN 5998-01-239-8847
NSN 6105-01-602-5388
NSN 5996-01-100-7982
NSN 6130-01-388-9057
NSN 6220-01-268-2913
NSN 7035-01-127-9019
NSN 5960-01-229-2692