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 6610-01-470-4684
NSN 6320-01-202-8761
NSN 6150-01-632-1443
NSN 6610-00-939-6510
NSN 2925-01-495-9669
NSN 6135-01-299-0778
NSN 6645-01-362-2587
NSN 6645-00-938-2173
NSN 6645-01-578-7959
NSN 6240-01-442-0435
NSN 6220-00-061-4140
NSN 5915-01-319-8422