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 4140-01-326-0219
NSN 5905-01-634-0595
NSN 5930-00-103-0273
NSN 5975-01-082-3784
NSN 5930-01-544-1180
NSN 6135-01-273-1253
NSN 5985-01-086-2872
NSN 6650-01-006-9593
NSN 5835-01-232-6904
NSN 5920-01-170-3464
NSN 6620-01-532-2243
NSN 5985-00-869-1041