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 4140-01-367-0791
NSN 6220-01-318-0969
NSN 5905-01-392-0798
NSN 5935-01-063-9053
NSN 5925-01-411-6028
NSN 6135-01-214-6441
NSN 5950-01-106-3287
NSN 5998-01-438-8477
NSN 5945-01-509-8682
NSN 6150-01-345-6166
NSN 6620-01-540-1524
NSN 5855-01-410-8979