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 4140-00-273-1199
NSN 5965-00-920-0455
NSN 7035-00-371-7749
NSN 6145-00-840-6685
NSN 6150-01-392-5344
NSN 6110-01-379-8526
NSN 6150-00-410-8920
NSN 6320-01-652-3806
NSN 6610-01-009-9569
NSN 5915-01-564-7706
NSN 5835-01-553-6772
NSN 5950-01-176-7233