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 5925-01-046-9213
NSN 5930-01-506-1444
NSN 6110-01-170-1298
NSN 5965-00-177-2932
NSN 6610-00-106-3401
NSN 5965-01-431-7377
NSN 2925-00-898-9135
NSN 2925-00-150-7334
NSN 5950-01-513-0136
NSN 6110-00-429-4777
NSN 2925-00-450-7783
NSN 5925-01-026-9649