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 6145-01-575-5912
NSN 5945-01-436-4635
NSN 6320-01-631-7828
NSN 5835-01-584-8538
NSN 6610-01-512-2025
NSN 5965-01-377-3587
NSN 5996-00-059-7061
NSN 6610-01-042-8621
NSN 6685-01-431-3598
NSN 6320-00-369-1333
NSN 5920-01-593-8848
NSN 5855-01-131-5166