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 5915-01-391-8810
NSN 5985-01-598-7517
NSN 5930-00-036-0381
NSN 6620-01-476-7355
NSN 6685-01-487-6001
NSN 5965-01-050-8447
NSN 5855-00-548-4742
NSN 6610-00-227-8846
NSN 5835-01-362-8367
NSN 6650-00-754-2276
NSN 5925-00-918-5531
NSN 5895-01-319-4544