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 4140-00-439-4100
NSN 6610-01-269-5437
NSN 5910-00-167-2417
NSN 5855-01-464-5084
NSN 5990-01-584-8363
NSN 6620-01-129-2941
NSN 5999-01-556-7931
NSN 6240-01-210-0164
NSN 5925-00-265-9488
NSN 6135-00-294-0950
NSN 7035-00-803-3056
NSN 5935-01-645-9521