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 6220-01-076-4383
NSN 4140-01-190-8709
NSN 6145-00-382-6199
NSN 2925-01-034-9586
NSN 6650-00-850-3312
NSN 5990-01-011-8022
NSN 6240-00-839-5118
NSN 5930-00-116-4033
NSN 5945-00-494-5091
NSN 5910-01-476-8897
NSN 5925-01-398-0517
NSN 5985-01-634-0635