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 6135-01-540-9655
NSN 5960-01-374-0764
NSN 5985-01-598-7137
NSN 6650-00-152-5359
NSN 7035-01-422-4642
NSN 5910-01-574-3732
NSN 6685-01-617-8378
NSN 6105-01-441-6732
NSN 6650-01-537-0443
NSN 6150-01-140-9669
NSN 6320-01-177-3192
NSN 6240-01-350-3533