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 5996-01-462-0833
NSN 6240-01-250-3574
NSN 5975-01-563-6319
NSN 6110-01-435-6462
NSN 5930-01-608-2618
NSN 5910-01-432-1246
NSN 6645-01-654-5293
NSN 5855-00-560-0110
NSN 6130-00-342-2416
NSN 4140-00-067-4798
NSN 6105-01-572-9572
NSN 5998-01-451-5389