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 6145-00-985-7926
NSN 5945-01-542-9117
NSN 6620-01-465-7615
NSN 6150-01-316-4881
NSN 5925-01-528-6976
NSN 6220-01-629-2636
NSN 6105-01-279-7588
NSN 6650-01-606-2277
NSN 6685-00-959-4089
NSN 5920-00-617-9909
NSN 6320-00-313-9114
NSN 6135-01-504-4309