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
U.s. Marine Corps
Dept. of the Navy
U.s. Coast Guard
National Weather Service
National Aeronautics and Space Administration
Finland
Lithuania
Slovenia
Poland
Bulgaria
Brazil
Spain
Columbia
Israel
Singapore
Kuwait
Morocco
Saudi Arabia
Malaysia
Australia
Belgium
Canada
New Zealand
France
Germany
Republic of Korea
United Kingdom
Netherlands
Portugal
Italy
Denmark
Norway
Greece
Turkey
NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 6105-01-201-7228
NSN 5835-01-510-1873
NSN 6320-00-682-3448
NSN 5960-01-059-6300
NSN 6135-00-246-0324
NSN 6610-01-129-1053
NSN 5935-01-537-7946
NSN 6135-01-106-7740
NSN 6130-01-598-1193
NSN 6130-01-464-0628
NSN 6220-01-630-2010
NSN 5965-00-078-7615