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 5925-01-465-4520
NSN 5915-01-442-6050
NSN 6320-01-521-1764
NSN 6685-01-152-0668
NSN 6320-01-236-9562
NSN 6620-00-426-6884
NSN 5910-00-960-4441
NSN 6130-00-173-2858
NSN 6645-01-135-8498
NSN 5920-01-085-5490
NSN 5990-01-571-7468
NSN 5855-00-327-2112