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 6320-01-600-5808
NSN 5990-00-005-5215
NSN 5985-01-541-3325
NSN 5996-01-366-4150
NSN 6135-01-552-1568
NSN 6130-01-437-5576
NSN 6135-01-056-4609
NSN 6150-00-070-3571
NSN 6685-00-184-3894
NSN 5990-00-836-6239
NSN 5998-00-262-4879
NSN 5975-01-518-6420