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 5895-01-029-9535
NSN 6145-01-072-9251
NSN 6620-00-955-6122
NSN 6650-01-630-3410
NSN 6110-00-754-7926
NSN 5895-01-117-7108
NSN 5998-00-763-7548
NSN 5930-00-064-8371
NSN 5835-01-118-4690
NSN 5835-01-026-0670
NSN 6650-00-792-8577
NSN 6220-01-367-3658