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.
Canada 
New Zealand 
Republic of Korea 
Norway 
Greece 
Turkey Classification: Washers other than lock washers, iron or steel
NSN 6620-01-253-0374
NSN 5985-00-065-2155
NSN 5915-01-439-2249
NSN 5925-00-308-7295
NSN 5895-01-464-9589
NSN 5905-01-648-4230
NSN 6650-01-583-1215
NSN 6610-01-511-0982
NSN 5835-01-015-4610
NSN 6620-01-492-8470
NSN 6110-01-036-1628
NSN 6685-00-238-6586