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 5996-01-514-9292
NSN 6150-00-443-2231
NSN 5990-01-475-8708
NSN 4140-00-213-9937
NSN 6320-01-088-1109
NSN 7035-00-679-9027
NSN 6145-01-422-4371
NSN 5960-00-988-5737
NSN 6105-01-350-6973
NSN 5965-01-141-6485
NSN 6610-01-574-3260
NSN 7035-00-155-9513