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 5999-01-013-8873
NSN 5960-00-170-6916
NSN 5895-01-050-3490
NSN 6220-01-310-5018
NSN 7035-01-431-4560
NSN 5855-01-330-3669
NSN 5910-01-418-1789
NSN 5965-01-392-6511
NSN 5998-01-186-8039
NSN 5925-01-141-8406
NSN 5996-01-532-1705
NSN 2925-01-033-0141