For 12 screw size
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: Washers other than lock washers, iron or steel
NSN 6320-01-478-9351
NSN 5945-01-485-5471
NSN 5895-01-069-3669
NSN 5996-01-590-9918
NSN 6650-01-529-3381
NSN 6240-00-883-1731
NSN 5999-00-771-7783
NSN 6220-01-101-9721
NSN 5925-00-493-9154
NSN 5925-01-531-2724
NSN 5975-00-118-8844
NSN 7035-00-188-6674