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 5985-01-125-9657
NSN 6145-00-378-3836
NSN 6110-01-234-4564
NSN 5975-01-388-2603
NSN 5960-01-226-7297
NSN 6130-01-147-5594
NSN 6320-01-447-4289
NSN 6110-01-322-8514
NSN 6150-01-027-1126
NSN 6645-00-754-4108
NSN 2925-01-267-1598
NSN 5920-01-588-8770