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.
Belgium 
Germany 
Italy Classification: Washers other than lock washers, iron or steel
NSN 6240-01-626-5272
NSN 5945-01-426-8747
NSN 5920-01-057-8529
NSN 5905-01-541-4705
NSN 5960-00-889-4246
NSN 5925-00-229-1412
NSN 5965-00-217-2476
NSN 6685-00-131-2200
NSN 6240-01-462-1874
NSN 5990-01-480-9938
NSN 5990-00-900-4459
NSN 5985-01-162-0146