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 6145-01-232-2658
NSN 5895-00-278-5194
NSN 6320-01-322-8340
NSN 6610-01-027-1641
NSN 5910-00-034-6609
NSN 5960-00-212-6367
NSN 6240-01-047-2786
NSN 5945-01-235-4093
NSN 6110-01-071-2726
NSN 5996-01-066-8075
NSN 6135-01-514-9327
NSN 6220-01-163-8775