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 5975-01-460-7516
NSN 6110-01-158-5680
NSN 5965-00-372-2537
NSN 5920-01-125-6469
NSN 5905-01-372-4366
NSN 5920-01-544-7186
NSN 5999-01-472-4807
NSN 5990-00-345-7128
NSN 5930-00-115-8570
NSN 5915-01-056-3278
NSN 5996-00-006-1118
NSN 5920-01-326-7806