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 
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Brazil 
Spain 
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Israel 
Singapore 
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Morocco 
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New Zealand 
France 
Germany 
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Italy 
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 5999-01-585-1748
NSN 5835-01-447-2544
NSN 6110-01-197-7917
NSN 5975-01-167-7427
NSN 5905-01-332-1006
NSN 6650-00-207-9639
NSN 5965-01-554-4929
NSN 6645-01-153-7666
NSN 5835-01-160-7282
NSN 5950-00-599-5025
NSN 5935-01-026-3563
NSN 5855-00-106-1640