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 5915-01-289-5687
NSN 2925-01-574-7119
NSN 6645-00-491-3611
NSN 6135-01-400-2947
NSN 6320-01-306-8117
NSN 4140-01-068-3500
NSN 5895-01-314-2446
NSN 6110-00-592-7474
NSN 5998-01-107-2145
NSN 5835-00-998-5757
NSN 5930-01-159-2613
NSN 5975-00-452-1197