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.
Dept. of the Navy Classification: Copper washers including spring washers not threaded
NSN 5905-01-418-6901
NSN 6610-01-185-5832
NSN 6645-01-048-7717
NSN 5920-01-120-6992
NSN 6110-01-627-4519
NSN 5925-01-204-6095
NSN 5925-01-255-1048
NSN 2925-00-247-6248
NSN 5975-01-364-8662
NSN 5945-01-424-4534
NSN 5925-00-510-6922
NSN 5945-00-003-6105