Flat washer, 1/2 in x 40 x 3
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.
NSN 6650-00-012-2430
NSN 5905-00-153-7650
NSN 6145-00-786-7980
NSN 5925-00-167-1213
NSN 6685-01-348-5588
NSN 5855-01-433-4393
NSN 2925-01-218-5556
NSN 2925-01-172-4785
NSN 6320-01-582-6752
NSN 5905-01-218-5520
NSN 5998-00-186-8583
NSN 5935-01-643-4409