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 5835-01-063-6284
NSN 5935-01-516-4236
NSN 6135-00-027-3914
NSN 5905-01-485-3327
NSN 6135-00-990-1822
NSN 6320-00-284-1524
NSN 5930-00-332-4448
NSN 5985-00-885-6504
NSN 5835-00-034-4976
NSN 4140-00-763-6527
NSN 5920-00-436-0780
NSN 6650-00-107-8509