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 4140-01-577-0245
NSN 6650-01-286-9541
NSN 5965-01-041-6128
NSN 5950-00-397-9869
NSN 6610-01-484-3161
NSN 5925-00-466-6934
NSN 5996-01-569-6049
NSN 6650-01-378-6868
NSN 6685-01-254-3014
NSN 5975-01-169-1920
NSN 4140-00-457-2510
NSN 5935-01-271-2963