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 7035-00-371-7749
NSN 5915-01-479-0779
NSN 4140-01-645-1800
NSN 6220-01-519-2892
NSN 5910-01-487-2183
NSN 5996-00-885-5114
NSN 6645-01-047-9724
NSN 5985-01-076-4710
NSN 5910-01-130-3570
NSN 6240-01-037-0975
NSN 5895-01-231-9292
NSN 6320-01-082-2970