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 5910-00-577-1403
NSN 6240-00-292-3237
NSN 5950-01-023-7692
NSN 5960-01-250-3478
NSN 6240-01-330-8126
NSN 5920-00-886-7896
NSN 5930-01-551-1593
NSN 5945-01-068-4471
NSN 5915-01-411-9954
NSN 6220-00-631-1734
NSN 5905-01-330-3152
NSN 6240-00-902-9310