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 5910-01-006-1429
NSN 5996-00-910-5452
NSN 6110-01-220-4119
NSN 5930-01-237-8116
NSN 5915-01-381-2519
NSN 6320-01-304-3639
NSN 5990-01-471-0494
NSN 6650-01-549-8478
NSN 6135-01-439-8669
NSN 5985-00-006-2031
NSN 6135-00-294-0950
NSN 6610-01-312-5788