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 5960-00-005-2424
NSN 2925-01-564-3847
NSN 6145-01-014-0534
NSN 5996-01-521-4007
NSN 6320-00-082-5868
NSN 6610-00-415-8151
NSN 5965-01-437-9721
NSN 2925-01-568-3705
NSN 5975-00-189-0857
NSN 5996-01-562-2370
NSN 5985-00-951-0533
NSN 5855-00-918-1622