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 4140-01-614-7286
NSN 5945-01-327-3629
NSN 5965-00-471-5018
NSN 5910-00-350-7730
NSN 6145-00-366-5790
NSN 5910-00-873-1776
NSN 5975-01-069-3236
NSN 6685-00-010-3053
NSN 5965-00-396-3411
NSN 5905-01-480-5271
NSN 6645-01-633-1852
NSN 5960-01-462-7704