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 5930-01-400-6126
NSN 6320-01-487-0336
NSN 5965-01-353-6380
NSN 5855-01-020-7982
NSN 5910-00-991-1780
NSN 6645-00-416-8864
NSN 2925-01-519-1707
NSN 6220-01-269-7380
NSN 6610-00-430-5208
NSN 6650-00-740-7338
NSN 5960-01-541-9884
NSN 5965-01-303-6105