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 5855-00-869-3635
NSN 5910-01-466-4912
NSN 5999-01-243-6994
NSN 5935-01-180-7900
NSN 5950-01-552-9485
NSN 5985-01-029-6655
NSN 5855-01-213-9076
NSN 5945-01-016-3717
NSN 5999-00-678-8634
NSN 5935-00-340-2809
NSN 5905-00-246-4639
NSN 5998-01-125-9480