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 5920-01-242-5040
NSN 5960-01-430-3911
NSN 6130-01-145-4924
NSN 5975-01-253-3999
NSN 4140-00-060-4052
NSN 2925-01-426-3410
NSN 5915-00-201-7090
NSN 6135-01-242-2304
NSN 5945-00-558-7560
NSN 5920-01-264-4950
NSN 4140-01-624-6592
NSN 6105-00-337-0904