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 5920-01-439-8566
NSN 6220-01-065-3765
NSN 2925-01-463-8856
NSN 6685-00-684-5200
NSN 5930-01-300-9856
NSN 6135-01-386-5709
NSN 6240-00-829-4179
NSN 5990-01-112-3901
NSN 5965-00-439-6287
NSN 6145-01-396-9124
NSN 6110-01-329-3560
NSN 6240-01-631-0767