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 6685-01-177-4005
NSN 5990-00-232-3965
NSN 5895-00-339-3014
NSN 6645-01-059-1861
NSN 6135-01-108-6057
NSN 5910-01-551-8720
NSN 5915-00-513-4285
NSN 6645-00-899-1235
NSN 6220-01-547-6285
NSN 6320-01-249-3236
NSN 5930-01-324-6222
NSN 5855-01-556-7421