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.
Dept. of the Army 
Dept. of the Air Force 
Dept. of the Navy 
Spain 
Republic of Korea 
Portugal 
Italy 
Greece 
Turkey Classification: Washers other than lock washers, iron or steel
NSN 5930-00-490-5307
NSN 5945-01-443-3168
NSN 6145-00-107-3283
NSN 6620-01-199-4005
NSN 6685-00-408-3558
NSN 5950-01-070-1553
NSN 5990-01-069-0365
NSN 7035-01-528-5527
NSN 5985-01-226-1056
NSN 5905-00-701-3498
NSN 5930-01-521-9367
NSN 6130-01-380-9799