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 6645-01-552-0004
NSN 5950-01-285-2100
NSN 5999-01-113-8564
NSN 5915-01-116-5548
NSN 6645-01-487-4341
NSN 2925-01-560-4123
NSN 5999-01-028-5518
NSN 5985-01-184-9475
NSN 5985-00-624-0166
NSN 6620-01-530-7538
NSN 5990-01-632-0969
NSN 5998-01-293-1260