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.
France 
Portugal 
Norway Classification: Washers other than lock washers, iron or steel
NSN 6320-01-117-5516
NSN 5990-01-116-2181
NSN 6135-01-618-8314
NSN 6135-01-529-2180
NSN 4140-00-660-8699
NSN 7035-01-649-0424
NSN 5925-00-227-0396
NSN 5855-01-355-5521
NSN 6685-01-390-2447
NSN 6620-00-869-9307
NSN 5905-01-345-4439
NSN 5930-01-088-8325