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 5990-01-114-5095
NSN 5999-00-269-5320
NSN 5965-01-606-6764
NSN 5910-00-221-2328
NSN 5990-00-185-9586
NSN 6240-01-530-2210
NSN 4140-01-053-5359
NSN 5930-01-394-0663
NSN 6135-00-932-3136
NSN 5925-01-555-8524
NSN 6610-00-186-9180
NSN 6320-00-036-3688