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 6135-00-347-0595
NSN 5985-01-193-0464
NSN 6685-01-442-8036
NSN 5975-01-629-5471
NSN 5998-00-212-4406
NSN 5945-01-391-9016
NSN 5975-01-587-5413
NSN 5975-00-479-3032
NSN 6320-01-407-8663
NSN 6645-00-334-9225
NSN 5996-01-609-8502
NSN 5930-01-246-9699