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 6130-01-332-4952
NSN 5895-01-179-2836
NSN 5999-01-297-2674
NSN 6135-00-983-9187
NSN 6240-00-246-5060
NSN 6610-01-633-8931
NSN 6650-01-575-8326
NSN 5965-01-626-9791
NSN 6685-01-118-9479
NSN 5960-00-497-9862
NSN 6110-01-498-9223
NSN 5975-01-431-8814