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 5999-01-410-8369
NSN 4140-00-138-4139
NSN 6645-01-132-1862
NSN 6130-01-484-7914
NSN 6150-00-248-0063
NSN 5990-00-226-1152
NSN 5950-00-275-2842
NSN 6135-00-248-4102
NSN 5835-00-198-4936
NSN 6220-01-571-4276
NSN 6610-01-244-7192
NSN 5985-00-578-7740