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 5999-01-436-5986
NSN 6150-01-114-7119
NSN 5935-00-100-6038
NSN 6610-01-606-0380
NSN 5950-01-359-8170
NSN 5895-01-249-5020
NSN 2925-01-570-3696
NSN 4140-00-775-5755
NSN 5925-01-436-2431
NSN 6320-00-521-9350
NSN 5930-01-027-1475
NSN 5930-00-870-4631