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.
New Zealand 
Greece 
Turkey Classification: Washers other than lock washers, iron or steel
NSN 5985-01-152-0715
NSN 5965-01-105-4194
NSN 6135-01-205-5965
NSN 5985-01-018-5848
NSN 5998-00-754-6157
NSN 5935-00-620-0641
NSN 5895-01-009-4325
NSN 5895-01-528-7881
NSN 5996-01-254-3892
NSN 6685-01-343-5523
NSN 5855-00-293-4708
NSN 6145-01-597-8005