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 5975-01-101-3089
NSN 5855-01-218-3735
NSN 7035-00-572-7086
NSN 4140-01-349-4447
NSN 6650-00-758-4763
NSN 6645-01-252-8870
NSN 6620-01-565-4493
NSN 6610-00-667-6832
NSN 6220-01-534-6695
NSN 5895-01-480-8912
NSN 5925-01-595-3663
NSN 5930-00-240-4247