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 6150-01-160-1428
NSN 5925-00-241-1441
NSN 5996-01-448-6814
NSN 5930-00-205-2945
NSN 6105-01-180-2807
NSN 6610-01-336-8027
NSN 5975-01-208-5760
NSN 6150-01-425-5240
NSN 4140-01-578-4112
NSN 5930-01-507-2848
NSN 5960-00-168-8388
NSN 5835-01-540-4995