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 5960-01-274-7628
NSN 6220-01-133-4286
NSN 5975-01-240-6415
NSN 5930-00-592-9971
NSN 6135-01-326-2536
NSN 5999-00-370-0797
NSN 6220-00-033-7234
NSN 5996-01-480-8956
NSN 4140-00-998-7691
NSN 6685-01-336-0494
NSN 5999-00-834-1270
NSN 5925-01-186-4604