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 4140-00-437-7858
NSN 5835-01-294-5753
NSN 6105-00-441-4847
NSN 5965-00-574-7525
NSN 6320-01-272-7072
NSN 6650-01-653-5576
NSN 6130-00-721-4156
NSN 6685-00-917-2153
NSN 6150-01-574-8508
NSN 5920-01-521-3087
NSN 6320-00-216-8779
NSN 5975-01-012-2486