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 5935-00-615-4373
NSN 6645-01-508-4012
NSN 5990-01-485-0260
NSN 6610-00-161-7439
NSN 2925-01-139-7106
NSN 6145-01-435-3837
NSN 5998-00-115-5791
NSN 5965-01-441-3876
NSN 5905-00-196-3785
NSN 5910-01-184-1451
NSN 6145-01-113-8205
NSN 6135-01-354-3337