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 
Thailand 
Portugal 
Italy 
Greece Classification: Copper washers including spring washers not threaded
NSN 5925-00-159-1544
NSN 6135-01-100-3593
NSN 6685-01-197-7703
NSN 5998-01-045-4168
NSN 5925-01-026-9649
NSN 6150-01-429-8315
NSN 2925-01-348-8306
NSN 5999-01-158-7233
NSN 6610-01-207-0045
NSN 5999-00-079-1911
NSN 5895-01-362-4731
NSN 5905-01-265-9626