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 5855-00-560-0110
NSN 5985-00-005-2193
NSN 5945-01-181-7340
NSN 5975-00-492-8835
NSN 6240-01-312-6281
NSN 6610-00-473-0548
NSN 5915-00-632-7088
NSN 6145-01-331-3287
NSN 5950-00-324-8499
NSN 6145-01-641-7703
NSN 5915-01-048-8791
NSN 5975-01-227-1809