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 5905-01-412-0472
NSN 5915-01-382-7268
NSN 6650-01-136-5230
NSN 2925-00-788-0043
NSN 6645-00-038-7737
NSN 6610-01-033-0629
NSN 6135-01-415-4124
NSN 5910-00-218-1114
NSN 5930-01-325-8300
NSN 6110-01-244-4986
NSN 5950-01-200-7693
NSN 6240-01-216-4060