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 2925-01-618-5706
NSN 5960-00-875-9823
NSN 6650-00-094-9410
NSN 5975-01-038-3769
NSN 6150-01-372-8919
NSN 5945-01-415-3654
NSN 6685-01-609-6902
NSN 6240-00-372-4841
NSN 6645-01-062-0905
NSN 4140-01-073-3777
NSN 5920-01-565-6972
NSN 6130-01-408-0772