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 5990-01-160-6978
NSN 2925-00-989-0523
NSN 5996-00-172-3647
NSN 5920-01-096-1864
NSN 5950-01-497-8073
NSN 5855-00-936-8951
NSN 5925-01-150-8127
NSN 6110-00-553-8816
NSN 5990-01-512-5478
NSN 5935-01-468-0415
NSN 5835-01-224-2792
NSN 5905-01-406-8376