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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Romania 
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Brazil 
Spain 
Columbia 
Israel 
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Singapore 
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 6145-01-128-9083
NSN 5985-00-078-7791
NSN 6145-01-634-0388
NSN 6145-01-389-2357
NSN 5920-00-484-0377
NSN 7035-00-135-4758
NSN 6320-01-552-8721
NSN 5999-01-270-9909
NSN 5835-01-030-2519
NSN 5998-00-400-0770
NSN 6145-01-515-7621
NSN 6130-00-202-4688