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 6135-01-127-0173
NSN 5985-00-141-9036
NSN 4140-00-144-6833
NSN 5905-00-277-7439
NSN 5835-01-072-7693
NSN 6685-01-246-7014
NSN 5965-01-055-7645
NSN 5950-00-900-5356
NSN 5930-01-060-5295
NSN 6620-01-483-1138
NSN 2925-01-284-8641
NSN 5855-01-100-3272