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 5925-01-250-1492
NSN 6240-00-104-4662
NSN 7035-01-463-3368
NSN 5945-01-468-3227
NSN 5990-01-557-7784
NSN 5960-01-485-0437
NSN 6110-00-510-8155
NSN 5910-01-423-5267
NSN 6150-01-545-3589
NSN 5920-00-158-5391
NSN 6130-00-318-3590
NSN 5920-01-143-5002