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 5996-00-222-6049
NSN 6110-00-389-6600
NSN 5998-01-029-1519
NSN 6220-00-764-6099
NSN 5985-00-615-5973
NSN 5999-00-950-3848
NSN 7035-00-541-8516
NSN 5975-01-268-7093
NSN 5835-01-576-9013
NSN 6645-01-232-4843
NSN 6240-01-350-6809
NSN 6685-01-007-7339