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 
Morocco 
Republic of Korea 
Greece Classification: Gaskets, washers and other seals, of vulcanized rubber other than hard rubber
NSN 5895-01-411-5439
NSN 5915-01-333-0323
NSN 5985-01-063-7012
NSN 6110-01-095-8218
NSN 6150-01-201-3766
NSN 5910-00-391-5250
NSN 6135-01-010-0891
NSN 6105-00-556-2123
NSN 5985-01-487-6479
NSN 5915-01-055-9248
NSN 6135-01-414-8831
NSN 5905-01-020-8389