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 6610-01-348-0545
NSN 5996-01-197-7005
NSN 4140-01-220-7697
NSN 5996-01-246-2472
NSN 6610-01-618-2158
NSN 6220-01-085-3391
NSN 5996-01-275-2833
NSN 6150-01-176-9345
NSN 6110-01-445-2385
NSN 5985-01-421-3495
NSN 5990-01-390-2177
NSN 2925-00-853-5039