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.
Dept. of the Navy Classification: Copper washers including spring washers not threaded
NSN 4140-01-113-5289
NSN 7035-01-282-7124
NSN 2925-01-132-5827
NSN 6650-01-218-4742
NSN 6320-00-322-3460
NSN 5915-00-581-2455
NSN 5945-01-418-3203
NSN 5935-01-269-2466
NSN 4140-01-463-6377
NSN 5930-01-616-4880
NSN 5855-01-290-3248
NSN 6240-00-454-9293