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 6620-01-543-3247
NSN 5925-01-458-7559
NSN 4140-00-274-9638
NSN 5985-01-324-6396
NSN 6150-01-148-8739
NSN 7035-01-174-1029
NSN 5998-01-510-3971
NSN 5999-00-897-9457
NSN 5855-01-448-9794
NSN 5985-01-112-2591
NSN 5950-01-333-8933
NSN 6620-01-029-3705