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 5905-01-309-4768
NSN 5950-01-265-3682
NSN 5925-01-378-6857
NSN 4140-01-469-6140
NSN 5990-00-914-4261
NSN 5920-01-171-9139
NSN 5920-00-928-6721
NSN 5935-00-469-0387
NSN 6135-01-633-8502
NSN 6135-00-500-2082
NSN 6220-00-186-0177
NSN 6130-00-153-3136