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 5855-01-110-9564
NSN 5985-01-034-7523
NSN 6135-01-557-3351
NSN 5855-01-463-7372
NSN 5915-00-238-8942
NSN 5999-01-215-1236
NSN 5835-00-138-7807
NSN 6620-01-411-7382
NSN 6645-00-256-4072
NSN 5996-01-626-9892
NSN 5905-01-050-3897
NSN 5950-01-641-4010