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 5965-01-406-6320
NSN 6620-01-462-0001
NSN 5945-01-200-3672
NSN 6110-01-501-0215
NSN 4140-00-210-0552
NSN 5895-01-011-6788
NSN 6240-01-079-7848
NSN 5950-01-476-7887
NSN 5895-00-594-8819
NSN 4140-01-152-9161
NSN 6135-01-238-2878
NSN 6320-00-433-2773