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 5998-01-448-9178
NSN 6610-01-381-3181
NSN 7035-01-103-6517
NSN 5930-00-369-0344
NSN 5999-01-272-9466
NSN 5855-00-361-0167
NSN 6135-00-474-1397
NSN 5945-01-142-8761
NSN 6650-01-327-4122
NSN 5915-01-267-9899
NSN 5895-01-597-0677
NSN 6620-01-346-9340