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 5965-01-121-2319
NSN 5905-01-044-6469
NSN 6650-01-388-4363
NSN 5910-01-339-6754
NSN 6610-01-371-3006
NSN 6645-00-953-4170
NSN 5905-01-285-3417
NSN 6320-01-478-9351
NSN 6645-01-123-9277
NSN 5935-00-088-3463
NSN 5950-01-539-4540
NSN 4140-01-259-2951