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 2925-01-386-7392
NSN 6620-00-679-5830
NSN 5905-01-108-4263
NSN 5996-00-827-8651
NSN 6610-00-377-7956
NSN 6130-01-158-5512
NSN 6150-00-137-9802
NSN 5855-01-348-6690
NSN 5945-01-484-1184
NSN 5915-01-486-3275
NSN 6685-01-064-9480
NSN 6610-01-567-7242