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 6145-01-012-0185
NSN 5905-01-071-8118
NSN 5960-01-142-1995
NSN 6135-00-209-6918
NSN 6240-01-231-9243
NSN 6150-00-733-0866
NSN 2925-01-228-6554
NSN 5925-01-478-7743
NSN 6240-01-624-5371
NSN 5895-01-412-4304
NSN 5996-00-916-0149
NSN 6685-01-379-6674