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 5920-00-187-0260
NSN 6240-00-319-4549
NSN 5930-01-102-7768
NSN 2925-01-323-9835
NSN 5915-01-364-5262
NSN 5990-00-791-4064
NSN 6645-01-267-5505
NSN 5910-01-607-7724
NSN 5915-01-033-2414
NSN 5920-01-066-6926
NSN 6135-01-617-0253
NSN 5920-01-076-4705