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 6220-01-145-4993
NSN 5915-01-057-6798
NSN 5960-00-822-2571
NSN 5985-00-714-9593
NSN 5950-01-077-4521
NSN 6610-00-365-4454
NSN 5975-01-342-3514
NSN 5915-01-132-0634
NSN 5910-01-021-4987
NSN 6240-01-159-5043
NSN 5920-00-351-8428
NSN 6240-01-082-1408