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 5925-01-575-5233
NSN 6610-01-345-1110
NSN 5855-01-349-2055
NSN 7035-00-371-7749
NSN 6145-01-070-0579
NSN 5855-01-236-9645
NSN 6620-01-217-3216
NSN 7035-01-013-9889
NSN 6220-00-038-1712
NSN 5915-01-161-9404
NSN 6130-00-179-4692
NSN 5910-00-155-4763