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 6130-01-276-6804
NSN 6645-01-323-1956
NSN 6135-00-548-2765
NSN 6135-00-950-2669
NSN 5905-01-634-0595
NSN 2925-01-614-3634
NSN 5855-00-156-5489
NSN 5990-01-254-2936
NSN 6135-01-462-6040
NSN 5950-01-106-7606
NSN 6610-01-633-8931
NSN 5996-01-321-3092