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 6320-01-607-1491
NSN 5920-00-061-7187
NSN 6150-01-229-2992
NSN 5930-00-950-9653
NSN 6130-00-202-4688
NSN 5975-01-228-2426
NSN 6240-00-383-7668
NSN 6135-00-816-9052
NSN 5990-01-512-9129
NSN 5996-01-330-0684
NSN 6645-00-433-5982
NSN 6645-00-279-1777