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 6620-01-453-6764
NSN 6650-01-644-3532
NSN 6135-01-597-1901
NSN 5910-01-095-3992
NSN 5965-01-394-1542
NSN 7035-00-173-2281
NSN 5835-01-286-6499
NSN 5910-01-114-5672
NSN 5905-01-114-1604
NSN 7035-01-611-9222
NSN 6645-01-504-3394
NSN 6105-00-392-1919