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 5990-01-448-2751
NSN 5905-01-131-6712
NSN 6135-00-179-8305
NSN 6220-00-340-1313
NSN 5998-01-148-0741
NSN 6105-01-509-1027
NSN 7035-00-703-3535
NSN 6130-00-159-1104
NSN 2925-01-394-1812
NSN 5855-01-010-4921
NSN 5950-00-994-8134
NSN 6685-00-249-4170