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 5990-00-158-5392
NSN 4140-01-289-1264
NSN 6150-01-150-6907
NSN 5910-01-286-7186
NSN 5895-01-036-2510
NSN 6220-00-337-4407
NSN 5965-01-393-5833
NSN 6150-01-431-0720
NSN 5915-01-055-5643
NSN 5895-01-410-7447
NSN 5990-00-568-4940
NSN 5950-01-151-5100