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 5925-00-529-3950
NSN 5985-01-051-9432
NSN 5855-00-494-9581
NSN 5960-01-487-6436
NSN 5985-01-600-9950
NSN 5895-00-733-5748
NSN 6610-01-527-1599
NSN 6135-01-422-1440
NSN 5855-01-291-6790
NSN 5835-01-550-5094
NSN 5925-00-209-0435
NSN 5999-00-578-5658