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 6620-01-185-0811
NSN 6320-01-544-6447
NSN 6150-00-929-2134
NSN 5930-00-910-9368
NSN 6220-01-323-0431
NSN 5905-01-492-5861
NSN 4140-01-479-3405
NSN 6145-01-604-9552
NSN 6220-00-707-5044
NSN 5925-00-456-0651
NSN 5905-01-288-9336
NSN 5965-00-588-6789