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 
Bulgaria 
Brazil 
Spain 
Columbia 
Israel 
Singapore 
Kuwait 
Morocco 
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Belgium 
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New Zealand 
France 
Germany 
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Netherlands 
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Italy 
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 6110-01-155-8170
NSN 6130-01-425-0319
NSN 6105-01-542-5797
NSN 6320-01-198-4024
NSN 5990-01-465-9235
NSN 6645-01-642-3637
NSN 6685-01-545-4857
NSN 6110-01-437-8559
NSN 5915-01-597-9432
NSN 6135-01-190-2628
NSN 5835-01-642-4705
NSN 5925-01-093-9455