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 5915-00-557-1760
NSN 6105-00-130-6961
NSN 5960-01-453-6170
NSN 5950-00-311-5389
NSN 6685-01-420-9611
NSN 5950-01-591-3050
NSN 5950-01-573-7961
NSN 5930-01-014-9441
NSN 6645-01-394-5149
NSN 5985-00-855-6727
NSN 2925-00-078-0525
NSN 5990-00-415-5351