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 6645-01-098-1179
NSN 5996-01-012-3267
NSN 6645-00-899-1235
NSN 5965-01-578-2280
NSN 5855-01-327-2681
NSN 6320-00-731-6134
NSN 6240-01-269-8454
NSN 5950-00-596-8102
NSN 7035-01-230-0250
NSN 6110-00-669-6586
NSN 5999-01-199-9143
NSN 5945-01-025-3183