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 5990-01-386-5561
NSN 6135-00-240-3200
NSN 6320-01-564-0893
NSN 6105-01-154-8232
NSN 2925-01-604-8984
NSN 5930-00-273-0778
NSN 6150-01-063-8315
NSN 5950-00-343-1910
NSN 5905-01-191-1990
NSN 6320-01-141-1665
NSN 5935-00-482-1776
NSN 5930-01-400-6126