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 7035-01-295-1609
NSN 5965-00-689-1545
NSN 5855-01-319-9757
NSN 6240-00-104-4662
NSN 7035-01-331-5614
NSN 6320-01-443-4972
NSN 6220-01-333-3579
NSN 6135-01-142-2417
NSN 5990-01-258-3848
NSN 6620-01-369-3589
NSN 5965-01-151-9816
NSN 2925-00-373-8837