A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6620-01-025-1443
NSN 5905-01-456-8595
NSN 6610-01-400-3880
NSN 6150-00-187-7287
NSN 5855-01-295-2313
NSN 6650-01-142-9293
NSN 6240-01-225-4671
NSN 6150-00-345-7917
NSN 6620-00-613-3023
NSN 6105-01-447-9785
NSN 6240-01-401-5340
NSN 5965-00-275-0491