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.
Dept. of the Navy Classification: Copper washers including spring washers not threaded
NSN 2925-00-087-2465
NSN 5945-01-238-2184
NSN 5930-00-976-4605
NSN 5910-00-250-8443
NSN 7035-01-316-7860
NSN 6320-01-145-9013
NSN 5855-01-184-8089
NSN 5945-01-357-6624
NSN 5996-01-276-8835
NSN 5950-01-443-9852
NSN 5999-01-483-8696
NSN 6320-01-189-6891