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 5990-00-707-0731
NSN 5990-01-644-1441
NSN 6685-00-194-1710
NSN 6320-01-296-3181
NSN 5895-01-142-9265
NSN 7035-01-218-6960
NSN 6240-00-270-8182
NSN 5985-00-267-9253
NSN 5855-00-560-0110
NSN 5915-01-460-3021
NSN 6320-01-513-9166
NSN 5990-01-296-8190