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: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 4140-01-107-0222
NSN 5905-01-010-3320
NSN 5925-01-463-8594
NSN 6135-01-026-9960
NSN 5999-01-478-5328
NSN 6645-01-069-3286
NSN 5895-01-617-0288
NSN 5930-00-801-7233
NSN 6145-01-478-1722
NSN 5835-01-647-6426
NSN 5965-01-541-6788
NSN 6145-01-589-0611