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 6685-01-504-7356
NSN 5998-00-179-9932
NSN 4140-00-812-9748
NSN 5910-00-175-8017
NSN 5996-01-341-8499
NSN 6145-01-390-9015
NSN 5999-00-973-9115
NSN 5920-01-565-6972
NSN 6130-01-609-2632
NSN 5855-01-430-5459
NSN 5960-01-252-8821
NSN 5925-00-933-6303