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 6685-01-578-6664
NSN 6620-01-453-6764
NSN 5996-01-246-2472
NSN 5965-01-233-8607
NSN 6130-01-625-7659
NSN 5855-00-560-0110
NSN 5975-00-547-8911
NSN 6110-01-054-9059
NSN 6240-00-514-3507
NSN 5965-01-317-5020
NSN 6685-01-470-6275
NSN 5855-00-237-4088