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.
Italy 
Greece 
Turkey Classification: Copper washers including spring washers not threaded
NSN 2925-01-643-8395
NSN 5905-01-423-5823
NSN 6135-00-913-2062
NSN 5835-01-332-2867
NSN 6110-01-422-1572
NSN 6645-01-541-5696
NSN 5945-01-409-0879
NSN 6685-01-200-4742
NSN 6150-01-165-5070
NSN 5960-01-602-6009
NSN 6650-01-335-6669
NSN 5945-01-216-0878