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.
Brazil 
New Zealand 
Turkey Classification: Washers other than lock washers, iron or steel
NSN 6620-01-364-0195
NSN 6145-01-333-8191
NSN 5965-01-613-0932
NSN 5950-00-615-9933
NSN 5990-01-517-7848
NSN 5910-01-250-3124
NSN 5990-01-076-8901
NSN 5905-00-357-1072
NSN 6685-01-324-0341
NSN 5990-01-036-8080
NSN 5915-00-118-5957
NSN 5975-00-583-8625