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 5905-01-443-4002
NSN 5999-01-606-8571
NSN 6220-00-881-2596
NSN 6620-00-172-9222
NSN 6110-01-255-0051
NSN 6220-00-856-0496
NSN 2925-01-443-4216
NSN 5990-01-223-6321
NSN 6130-01-378-6778
NSN 5965-01-241-9865
NSN 5905-00-215-6728
NSN 2925-01-633-4048