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 5996-00-725-2701
NSN 6145-01-646-8053
NSN 5895-00-097-6039
NSN 6145-01-015-6934
NSN 5990-01-280-0321
NSN 5945-01-378-9767
NSN 6645-01-133-2801
NSN 7035-00-763-6180
NSN 5895-00-009-0127
NSN 6650-00-957-0714
NSN 6240-01-244-3383
NSN 6610-01-284-3236