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 6645-01-068-6524
NSN 5915-01-105-1960
NSN 5999-01-224-6006
NSN 5950-00-070-4704
NSN 4140-01-414-1710
NSN 5910-01-440-9558
NSN 5945-00-393-1191
NSN 6685-01-507-0605
NSN 6320-00-116-3658
NSN 6645-00-456-7653
NSN 5835-01-447-2544
NSN 5945-01-580-0107