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 6645-01-250-8129
NSN 5985-00-361-8863
NSN 5950-00-501-9448
NSN 5996-01-235-1643
NSN 6145-01-551-2554
NSN 5965-01-258-5662
NSN 6240-01-611-7193
NSN 6240-01-484-5107
NSN 6150-01-585-0229
NSN 6645-01-562-3960
NSN 5920-01-157-9471
NSN 6220-01-085-4947