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 5855-01-234-5346
NSN 6610-01-412-4427
NSN 6685-01-429-2715
NSN 6240-00-953-2673
NSN 5950-01-413-4089
NSN 5855-00-472-2055
NSN 5975-00-964-7332
NSN 5960-01-111-5142
NSN 6620-01-535-0070
NSN 6130-01-227-3013
NSN 5935-00-499-3936
NSN 5950-01-066-6248