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 6650-01-575-6721
NSN 6130-01-476-2843
NSN 5960-00-264-3017
NSN 5950-01-241-9890
NSN 6135-00-315-1187
NSN 6145-00-378-3836
NSN 5990-01-003-4209
NSN 6130-00-497-8419
NSN 5985-01-449-0939
NSN 6220-00-099-9192
NSN 5925-01-174-1562
NSN 5975-00-156-3654