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 5996-01-113-7960
NSN 5935-00-944-4592
NSN 5855-01-010-4921
NSN 5925-01-519-8906
NSN 5950-01-332-4300
NSN 6105-01-445-3655
NSN 5960-01-338-3412
NSN 5960-01-413-3877
NSN 7035-01-369-1445
NSN 5975-01-059-2377
NSN 6240-00-010-1124
NSN 5990-01-411-5930