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 5910-01-391-0922
NSN 6220-00-374-2763
NSN 5835-01-537-1228
NSN 5895-01-634-0630
NSN 5990-00-173-2816
NSN 5910-01-282-6052
NSN 5950-01-093-9751
NSN 5905-01-021-2676
NSN 6240-01-267-6499
NSN 5925-01-309-9622
NSN 5975-00-448-6756
NSN 7035-00-500-7839