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 5990-01-218-8976
NSN 5998-01-033-0248
NSN 5996-00-844-6227
NSN 4140-01-003-2501
NSN 6150-01-487-4508
NSN 6145-01-412-0926
NSN 6645-01-191-9515
NSN 5998-01-056-8079
NSN 6645-01-137-6048
NSN 6145-00-278-0697
NSN 6650-01-463-6495
NSN 6110-01-073-0088