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.
Austria 
Spain 
Belgium 
France 
Greece 
Turkey Classification: Gaskets, washers and other seals, of vulcanized rubber other than hard rubber
NSN 6145-01-429-8529
NSN 5985-00-264-9212
NSN 6240-01-262-0149
NSN 5855-00-560-0110
NSN 5975-01-221-3363
NSN 6130-01-588-9788
NSN 6110-01-091-2431
NSN 5930-01-380-5027
NSN 5999-01-067-9057
NSN 2925-01-076-6128
NSN 5975-01-025-9990
NSN 5996-01-333-8585