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 6320-00-194-4252
NSN 5975-00-244-0706
NSN 6145-01-442-0621
NSN 6620-00-864-1120
NSN 5999-01-162-2820
NSN 5935-00-965-9311
NSN 6150-00-802-1454
NSN 5996-01-030-0052
NSN 5920-01-406-5195
NSN 6145-01-293-5463
NSN 5960-01-222-0074
NSN 6645-01-381-7104