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 5905-01-451-5038
NSN 5910-00-627-8576
NSN 5930-00-251-9327
NSN 6320-01-290-5271
NSN 6105-01-481-4042
NSN 5915-00-136-3989
NSN 4140-01-252-4392
NSN 5835-00-978-4473
NSN 6145-00-180-9815
NSN 5998-01-133-9402
NSN 5998-01-157-6044
NSN 6645-01-383-7362