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 5990-00-133-5395
NSN 5930-01-100-2100
NSN 6620-01-519-2628
NSN 6135-01-275-1363
NSN 5925-01-322-3979
NSN 5950-00-540-6948
NSN 5835-00-924-4268
NSN 5950-01-197-8290
NSN 5998-01-375-7859
NSN 6135-00-803-3012
NSN 5910-01-254-6586
NSN 7035-01-524-0014