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 6110-00-385-2978
NSN 5935-00-824-0211
NSN 6135-01-100-3593
NSN 7035-00-997-6212
NSN 5998-01-385-8035
NSN 6610-00-056-5889
NSN 5910-01-004-3341
NSN 5905-01-285-4702
NSN 6105-01-428-3557
NSN 5895-01-380-7603
NSN 5975-00-162-9530
NSN 5999-01-300-3637