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 5950-00-166-9555
NSN 5910-01-226-6374
NSN 4140-00-497-3416
NSN 5990-01-187-2981
NSN 6645-01-504-3394
NSN 6145-00-351-4539
NSN 4140-01-334-9043
NSN 2925-01-106-8871
NSN 5910-00-814-3932
NSN 6240-00-307-9650
NSN 5925-01-141-6688
NSN 5855-01-520-5873