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 5998-00-419-3846
NSN 5998-00-592-1563
NSN 5998-01-315-8139
NSN 6320-00-238-9973
NSN 6150-01-090-0720
NSN 4140-01-580-0277
NSN 6645-01-480-3347
NSN 5996-01-500-9751
NSN 6105-01-442-5644
NSN 5975-00-618-0161
NSN 6645-01-213-1739
NSN 5950-01-502-5342