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 5975-01-324-0352
NSN 6105-00-189-0515
NSN 6240-01-565-6276
NSN 6130-00-182-7702
NSN 5985-00-299-3510
NSN 7035-01-074-7634
NSN 6685-01-215-3751
NSN 5935-00-728-6248
NSN 6685-01-595-1525
NSN 6130-00-281-5978
NSN 5950-00-770-1851
NSN 6650-01-100-0933