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 5996-00-005-0222
NSN 5996-01-106-7328
NSN 6685-01-310-7193
NSN 6620-01-029-3171
NSN 2925-01-459-8093
NSN 5855-01-040-3881
NSN 5960-00-406-9985
NSN 6645-00-935-7046
NSN 5960-00-113-9963
NSN 5985-00-990-7513
NSN 5915-01-182-0421
NSN 5990-00-804-4982