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 6685-01-354-7059
NSN 5996-00-760-7012
NSN 6645-01-239-8133
NSN 6240-01-503-8717
NSN 2925-00-001-4604
NSN 6645-01-648-4439
NSN 5965-01-536-6730
NSN 6645-01-562-7154
NSN 5996-01-308-4174
NSN 6685-01-194-3931
NSN 6320-01-440-8771
NSN 6150-01-406-6820