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 6105-01-603-9605
NSN 5990-01-164-8673
NSN 5985-00-964-9673
NSN 6685-01-242-9876
NSN 5945-01-525-7779
NSN 4140-00-072-0865
NSN 6610-01-606-0380
NSN 5985-01-624-4121
NSN 5950-01-418-1787
NSN 5998-01-005-3655
NSN 5895-01-543-0379
NSN 6320-01-456-6300