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 4140-01-348-9029
NSN 6685-00-100-4753
NSN 6150-01-231-8610
NSN 6145-00-871-9112
NSN 6685-01-629-1276
NSN 4140-01-023-1537
NSN 5975-01-030-8767
NSN 5985-00-533-0659
NSN 5920-01-492-5535
NSN 6685-00-061-8910
NSN 5930-01-075-6352
NSN 6650-01-566-1573