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 6135-01-432-2785
NSN 6135-01-109-8763
NSN 5895-00-083-3630
NSN 5975-01-501-6362
NSN 5950-01-204-5891
NSN 5998-00-625-9196
NSN 5975-01-312-8194
NSN 5960-00-145-9361
NSN 6240-01-453-3199
NSN 6685-00-238-4682
NSN 6145-01-249-3133
NSN 5935-00-502-5171