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 
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Poland 
Romania 
Slovakia 
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Czech Republic 
Brazil 
Spain 
Columbia 
Israel 
Argentina 
Singapore 
Kuwait 
Morocco 
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Malaysia 
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Canada 
New Zealand 
France 
Germany 
Republic of Korea 
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Italy 
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 5920-01-334-8726
NSN 6145-00-186-2480
NSN 6110-01-492-5852
NSN 5910-00-573-5802
NSN 5965-01-623-5674
NSN 6610-00-106-8439
NSN 6135-01-139-1700
NSN 2925-01-607-7754
NSN 6145-01-107-7370
NSN 6135-00-422-3967
NSN 6240-01-390-0776
NSN 6645-01-304-4308