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 5930-01-359-7744
NSN 6685-01-523-9894
NSN 6650-01-069-2501
NSN 2925-01-483-2389
NSN 5855-00-411-8688
NSN 5999-01-386-4008
NSN 6135-01-299-7252
NSN 6135-01-445-4291
NSN 6130-01-431-9894
NSN 5920-00-694-0483
NSN 6645-00-684-3424
NSN 6645-01-171-4528