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 5999-01-577-3815
NSN 4140-01-249-4450
NSN 6145-00-578-7522
NSN 6645-01-277-9337
NSN 5985-01-657-2262
NSN 2925-00-888-5111
NSN 5945-01-253-6221
NSN 6650-01-424-3947
NSN 5998-01-448-2342
NSN 5855-01-053-9684
NSN 5998-00-707-5781
NSN 5960-01-649-1341