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.
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NATO Maintenance and Supply Agency Classification: Washers other than lock washers, iron or steel
NSN 6685-00-239-9301
NSN 6150-00-679-9203
NSN 6150-01-063-6483
NSN 6130-01-225-5658
NSN 6110-01-602-7843
NSN 5975-01-641-0244
NSN 5996-00-226-5364
NSN 5998-01-383-8704
NSN 5930-01-524-7444
NSN 5855-01-585-3005
NSN 5925-01-446-5267
NSN 5945-00-269-5375