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 6130-01-193-6688
NSN 5945-01-025-0504
NSN 5945-01-487-0395
NSN 5985-01-400-0882
NSN 5996-01-080-5957
NSN 5998-00-361-8697
NSN 7035-00-631-3782
NSN 5895-01-514-9807
NSN 5999-01-254-3884
NSN 5975-00-232-1785
NSN 5935-01-467-9084
NSN 6135-00-962-4111