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 5975-01-643-6126
NSN 5985-01-406-5209
NSN 5920-00-421-7546
NSN 5965-01-578-0872
NSN 6610-00-935-7131
NSN 5965-00-698-0433
NSN 6645-00-732-5425
NSN 5920-01-245-3584
NSN 5910-01-551-7047
NSN 5905-00-528-4412
NSN 6240-01-539-1989
NSN 2925-00-120-9302