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 5990-00-976-9496
NSN 6610-00-851-8727
NSN 5990-01-133-0351
NSN 5945-00-650-4900
NSN 5835-01-442-6482
NSN 6685-01-433-7958
NSN 5935-01-386-1232
NSN 5935-00-180-7629
NSN 6135-01-327-2092
NSN 7035-01-307-5366
NSN 6685-00-056-5404
NSN 5985-01-260-0987