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 5975-01-090-1062
NSN 6645-01-620-4837
NSN 5960-00-547-9180
NSN 5925-00-466-1189
NSN 6220-00-767-5080
NSN 6135-01-538-7272
NSN 5905-01-510-9397
NSN 5895-00-452-0333
NSN 5950-00-568-4862
NSN 5930-01-252-1729
NSN 6220-01-584-6947
NSN 6145-00-170-7947