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 6650-01-092-4525
NSN 5835-01-003-8076
NSN 6105-01-205-0301
NSN 6145-01-026-5214
NSN 7035-00-870-0290
NSN 5915-01-098-6998
NSN 5985-00-169-3680
NSN 5935-00-505-0815
NSN 6110-01-499-3365
NSN 5925-01-383-6992
NSN 5915-01-192-3224
NSN 5960-01-293-6624