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 6620-01-478-7549
NSN 6685-01-545-1907
NSN 5905-01-393-6502
NSN 5965-01-068-2714
NSN 5855-01-031-4729
NSN 6320-00-519-0770
NSN 6320-01-207-0636
NSN 6130-01-623-0536
NSN 6650-01-633-9147
NSN 5920-01-474-6004
NSN 5965-01-581-6122
NSN 5996-00-015-0436