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 6130-00-893-0847
NSN 5975-00-123-3494
NSN 5910-01-096-9853
NSN 6220-01-578-2435
NSN 4140-01-407-6595
NSN 2925-00-833-9466
NSN 5925-00-494-4685
NSN 5930-01-197-9710
NSN 6610-01-559-5073
NSN 6645-01-008-2720
NSN 6150-01-109-4910
NSN 6135-01-100-3593