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 5910-01-521-9537
NSN 5999-01-270-3957
NSN 6145-01-140-1538
NSN 6685-01-287-9974
NSN 6645-01-078-8801
NSN 5965-00-841-9195
NSN 5910-00-677-6552
NSN 5999-00-954-2269
NSN 6685-01-383-7499
NSN 2925-01-013-0413
NSN 6620-00-180-9061
NSN 6620-01-078-6372