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 5920-01-009-1307
NSN 6620-01-246-4314
NSN 5855-00-010-6492
NSN 5960-00-156-5603
NSN 5835-00-827-1904
NSN 6145-00-301-9124
NSN 5990-00-232-3965
NSN 6320-01-422-1212
NSN 6320-01-564-0893
NSN 6685-00-186-9190
NSN 6220-01-459-6969
NSN 5925-01-200-6825