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 5960-01-481-8051
NSN 5985-00-932-1630
NSN 6645-01-184-7419
NSN 5920-01-010-4855
NSN 5999-00-873-7036
NSN 6685-01-129-7472
NSN 5935-00-513-9606
NSN 6650-01-495-8031
NSN 6645-00-935-7046
NSN 5905-01-066-3755
NSN 6610-00-361-6954
NSN 6685-01-361-5998