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 6320-00-977-3930
NSN 5985-01-476-5373
NSN 5999-01-129-6461
NSN 7035-00-104-7613
NSN 5895-01-564-9565
NSN 5975-01-546-5165
NSN 6610-01-131-9133
NSN 5950-01-181-5608
NSN 6145-01-654-3713
NSN 4140-00-826-4283
NSN 5835-01-170-5537
NSN 5985-01-094-1097