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 6610-01-423-7481
NSN 5925-01-378-2914
NSN 6135-00-643-4843
NSN 2925-00-982-0409
NSN 6145-01-359-4148
NSN 6320-01-345-5818
NSN 5935-00-290-1778
NSN 6145-01-461-9072
NSN 4140-00-143-9084
NSN 5985-00-565-4240
NSN 6145-00-263-6989
NSN 4140-01-441-9170