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 
Canada 
United Kingdom Classification: Parts of armored fighting vehicles,motorized, whether or not fitted with weapons
NSN 5996-01-143-0130
NSN 5935-00-829-2713
NSN 7035-00-166-0339
NSN 5920-01-297-3133
NSN 6220-01-180-0166
NSN 5975-01-401-5355
NSN 5950-01-539-6223
NSN 5910-01-606-5661
NSN 5905-01-496-7133
NSN 5855-00-293-4708
NSN 5975-01-264-6676
NSN 6320-00-468-8421