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 5925-00-735-1350
NSN 5975-01-159-7384
NSN 5990-01-136-4068
NSN 6145-01-591-0083
NSN 6145-01-353-4154
NSN 5999-01-348-8871
NSN 5945-00-301-4830
NSN 5965-01-607-0632
NSN 5996-00-042-1518
NSN 5950-01-210-3996
NSN 7035-00-794-0792
NSN 5855-01-451-1163