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: Spring washers and other lock washers, iron or steel
NSN 6620-01-236-6290
NSN 6610-00-536-4977
NSN 2925-01-231-6312
NSN 4140-01-050-8096
NSN 5975-01-513-1320
NSN 6105-00-005-3527
NSN 5895-01-632-6372
NSN 5910-01-439-0853
NSN 5998-01-115-0538
NSN 5925-00-081-9135
NSN 6110-00-596-9124
NSN 5930-01-381-5528