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 6130-01-572-5281
NSN 5895-00-401-3537
NSN 6145-01-218-4097
NSN 5996-01-417-3139
NSN 5990-00-345-8967
NSN 5965-01-392-0049
NSN 5999-00-396-2629
NSN 6110-01-237-2548
NSN 5999-01-236-9461
NSN 7035-01-202-9250
NSN 6610-01-141-7014
NSN 5999-01-381-2457