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 5945-00-192-7187
NSN 5895-00-084-0208
NSN 6130-01-630-2455
NSN 6610-01-339-1595
NSN 5935-01-088-8079
NSN 5960-00-897-8591
NSN 6620-01-162-2839
NSN 6135-00-877-1659
NSN 5975-00-253-0878
NSN 7035-01-449-1189
NSN 5990-01-645-2592
NSN 6685-01-619-8665