Weapon system essential
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 
Hungary 
Lithuania 
Poland 
Brazil 
Spain 
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Israel 
Singapore 
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Morocco 
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 6685-01-297-0965
NSN 6150-01-590-0456
NSN 5990-00-621-9755
NSN 5998-01-594-7203
NSN 6645-00-515-6148
NSN 5945-01-399-1544
NSN 5935-01-244-1809
NSN 5930-01-400-6126
NSN 5960-01-364-1318
NSN 6320-00-164-4087
NSN 6130-01-357-2330
NSN 6685-01-475-8932