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.
Dept. of the Navy Classification: Copper washers including spring washers not threaded
NSN 6685-01-179-4591
NSN 5930-01-496-6971
NSN 5920-00-285-2245
NSN 6240-01-239-1488
NSN 5930-00-221-0981
NSN 6150-01-023-1516
NSN 5990-01-304-7597
NSN 2925-01-495-1178
NSN 5985-01-004-2723
NSN 4140-00-723-6418
NSN 5945-00-579-0243
NSN 6610-00-918-0337