As modified by hole d1a. And thickness
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 5930-01-445-5272
NSN 5975-00-586-8113
NSN 6645-01-160-1545
NSN 6145-01-279-1264
NSN 6620-00-922-1099
NSN 6130-01-417-2165
NSN 5950-01-460-7769
NSN 6110-01-342-4253
NSN 5990-01-050-7535
NSN 6620-01-194-8281
NSN 5920-01-593-6439
NSN 5996-01-195-4122