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 6145-01-398-3125
NSN 5945-01-191-9858
NSN 5945-01-150-0236
NSN 7035-01-558-1117
NSN 5985-01-154-5709
NSN 6130-01-055-5058
NSN 5999-00-492-2922
NSN 6150-00-567-7893
NSN 6150-01-195-8726
NSN 6135-01-468-6491
NSN 6685-01-630-2601
NSN 6135-00-497-0491