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.
Classification: Copper washers including spring washers not threaded
NSN 4140-00-874-2427
NSN 5975-01-409-2948
NSN 6130-00-756-4271
NSN 5975-01-053-1331
NSN 6645-00-056-1580
NSN 5835-00-152-5516
NSN 5835-00-644-4512
NSN 5998-01-250-3265
NSN 5920-01-195-2299
NSN 5855-01-228-0942
NSN 2925-01-553-5132
NSN 6145-01-449-2969